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A Trinuclear cadmium(II)–carbonate complex with a rare μ₃–η2:η2:η2 coordination mode: Synthesis, structure, spectroscopic characterization and properties 具有稀有μ₃-η2:η2:η2配位模式的三核镉(II) -碳酸配合物的合成、结构、光谱表征和性质
IF 3.2 3区 化学 Q2 CHEMISTRY, INORGANIC & NUCLEAR Pub Date : 2026-05-24 Epub Date: 2026-02-06 DOI: 10.1016/j.ica.2026.123115
Kishalay Bhar, Arijit Goswami, Nandita Das
A trinuclear cadmium(II)–carbonate complex, [Cd₃(μ₃–CO₃)(BAPEDA)₃](ClO₄)₄ (1), was synthesized in aqueous medium under ambient conditions using the flexible tetraamine ligand N,N′-bis(3-aminopropyl)ethylenediamine (BAPEDA). Single-crystal X-ray diffraction analysis revealed that 1 crystallizes in the trigonal space group R–3 and contains a central μ₃–CO₃2− ligand exhibiting a rare η222 coordination mode. The carbonate bridges three Cd2+ ions, each adopting a distorted octahedral geometry defined by four nitrogen atoms from BAPEDA and two oxygen atoms from the carbonate, with Cd···Cd separations up to 4.88 Å. The structure is further stabilized through extensive N–H···O hydrogen bonding involving amine groups and perchlorate anions, leading to a three-dimensional supramolecular framework. FTIR and UV–Visible spectral data support the stepwise coordination process and confirm the characteristic carbonate binding. The interaction of 1 with Ca2+ ions in aqueous solution results in the formation of CaCO₃ and regeneration of the Cd-BAPEDA species, indicating a carbonate transfer process.
以柔性四胺配体N,N′-双(3-氨基丙基)乙二胺(BAPEDA)为原料,在常压条件下在水介质中合成了三核镉(II) -碳酸酯配合物[Cd₃(μ₃-CO₃)(BAPEDA)₃](ClO₄)₄(1)。单晶x射线衍射分析表明,1在三角空间群R-3中结晶,中心含有一个μ₃-CO₃2−配体,表现出罕见的η2:η2:η2:η2配位模式。碳酸盐桥接三个Cd2+离子,每个离子都采用由来自BAPEDA的四个氮原子和来自碳酸盐的两个氧原子定义的扭曲八面体几何形状,Cd···Cd分离高达4.88 Å。通过胺基和高氯酸盐阴离子形成广泛的N-H··O氢键,进一步稳定了结构,形成了三维超分子框架。FTIR和uv -可见光光谱数据支持逐步配位过程,并证实了碳酸盐结合的特征。1与Ca2+离子在水溶液中的相互作用导致CaCO₃的形成和Cd-BAPEDA的再生,表明了一个碳酸盐转移过程。
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引用次数: 0
Oxidative addition of carbon–fluorine bonds to the Ga(I) center 碳氟键氧化加成到Ga(I)中心
IF 3.2 3区 化学 Q2 CHEMISTRY, INORGANIC & NUCLEAR Pub Date : 2026-05-24 Epub Date: 2026-02-01 DOI: 10.1016/j.ica.2026.123097
Natalia L. Bazyakina , Tatyana S. Koptseva , Mikhail A. Kiskin , Evgeny V. Baranov , Igor L. Fedushkin
The reaction of anionic 1,3-diaza-2-gallols [(ArBIG-bian)Ga][Li(DME)3] (1) and [(ArBIG-bian)Ga][Na(DME)3] (2) (ArBIG-bian = 1,2-bis[(2,6-dibenzhydryl-4-methylphenyl)imino]acenaphthene) with tetrafluoroethylene (1:1) affords oxidative addition of a carbon–fluorine bond to gallium(I) center and the formation of gallium(III) derivatives [(ArBIG-bian)Ga(F)(C2F3)Li(DME)2] (3) and [(ArBIG-bian)Ga(F)(C2F3)Na(DME)2] (4). The reaction of 2 with hexafluorobenzene gives complex [(ArBIG-bian)Ga(F)(C6F5)][Na(DME)3] (5). Compounds 35 have been characterized by elemental analysis and IR spectroscopy; their molecular structures have been determined by the single-crystal X-ray analysis. The diamagnetic 3–5 have been characterized by 1H,19F{1H},13C{1H}-NMR spectroscopy.
阴离子1,3-二氮杂-2-胆酚[(ArBIG-bian)Ga][Li(DME)3](1)和[(ArBIG-bian)Ga][Na(DME)3] (2) (ArBIG-bian = 1,2-二[(2,6-二苄基-4-甲基苯基)亚胺]苊]与四氟乙烯(1:1)反应,在镓(I)中心氧化加成碳氟键,形成镓(III)衍生物[(ArBIG-bian)Ga(F)(C2F3)Li(DME)2](3)和[(ArBIG-bian)Ga(F)(C2F3)Na(DME)2](4)。2与六氟苯反应生成配合物[(ArBIG-bian)Ga(F)(C6F5)][Na(DME)3](5)。化合物3 ~ 5通过元素分析和红外光谱进行了表征;用单晶x射线分析确定了它们的分子结构。用1H、19F{1H}、13C{1H}-NMR对3-5的抗磁性进行了表征。
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引用次数: 0
Structural diversity in heavier alkali metal salts of a heteroleptic magnesium triamide anion 异电性三酰胺镁阴离子重碱金属盐的结构多样性
IF 3.2 3区 化学 Q2 CHEMISTRY, INORGANIC & NUCLEAR Pub Date : 2026-05-24 Epub Date: 2026-01-28 DOI: 10.1016/j.ica.2026.123096
Matthew J. Evans, Jeremy C. Mullins, Cameron Jones
The synthesis of alkali metal magnesiates M[Mg(NONTCHP)(HMDS)] (M = K, Rb or Cs; HMDS = bis(trimethylsilyl)amide; NONTCHP = 4,5-bis(2,4,6-tricyclohexylanilido)-2,7-diethyl-9,9-dimethyl-xanthene) via coordination of [Mg(NONTCHP)] with M(HMDS) is reported. Each complex is characterised using single crystal X-ray diffraction measurements and NMR spectroscopic methods. In the solid-state, each system exists as a 1D-polymer that assembles via bridging M‧‧‧π(arene) interactions to two [Mg(NONTCHP)(HMDS)] units. For K[Mg(NONTCHP)(HMDS)], polymerization occurs via coordination of each K-center to TCHP and xanthene arene rings. In contrast, for the heavier group 1 magnesiates, Rb[Mg(NONTCHP)(HMDS)] and Cs[Mg(NONTCHP)(HMDS)], the alkali metals exhibit alternating xanthene, xanthene- and TCHP, TCHP-coordination along the polymer chain. This work highlights the influence that group 1 metal cations can have on the long-range structure of bis(anilido)xanthene magnesiate complexes.
碱金属镁酸盐M[Mg(NONTCHP)(HMDS)] (M = K, Rb或Cs; HMDS =双(三甲基硅基)酰胺)的合成报道了[Mg(NONTCHP)]与M(HMDS)配位作用下的NONTCHP = 4,5-二(2,4,6-三环己基苯基)-2,7-二乙基-9,9-二甲基-杂蒽。每个配合物的特点是使用单晶x射线衍射测量和核磁共振光谱方法。在固态中,每个体系都以一维聚合物的形式存在,通过桥接M····π(芳烃)相互作用组装到两个[Mg(NONTCHP)(HMDS)]−单元。对于K[Mg(NONTCHP)(HMDS)],通过每个K中心与TCHP和杂蒽芳烃环的配位发生聚合。相反,对于较重的1族镁酸盐,Rb[Mg(NONTCHP)(HMDS)]和Cs[Mg(NONTCHP)(HMDS)],碱金属在聚合物链上表现出交替的杂蒽,杂蒽-和TCHP, TCHP-配位。这项工作强调了1族金属阳离子对双(苯胺)氧杂蒽氧化镁配合物的远程结构的影响。
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引用次数: 0
Molecular electrocatalysis of hydrogen peroxide reduction by copper(II) polyamine complexes: Electrochemical and DFT–QTAIM insights 过氧化氢还原铜(II)多胺络合物的分子电催化:电化学和DFT-QTAIM见解
IF 3.2 3区 化学 Q2 CHEMISTRY, INORGANIC & NUCLEAR Pub Date : 2026-05-24 Epub Date: 2026-02-07 DOI: 10.1016/j.ica.2026.123119
Janet Ocampo-Hernández , Angel Mendoza , Gilberto Rocha Ortiz , Juan Pablo F. Rebolledo-Chávez , Lillian G. Ramírez-Palma , Fernando Cortés-Guzmán , Marisela Cruz-Ramírez , Luis Ortiz-Frade
In this work we explore the molecular catalysis of hydrogen peroxide reduction using copper complexes bearing nitrogen σ-donor aliphatic polyamine ligands, namely [Cu(tren)Cl]Cl and [Cu(teta)Cl]PF6 (tren = tris(2-aminoethyl)amine, and teta = Triethylenetetramine). In comparison with previously reported copper complexes containing π-acceptor polypyridine ligands, these aliphatic ligands provide enhanced stabilization of the electrocatalytically active Cu(II) species. The complexes were synthesized and fully characterized using standard analytical techniques, including single-crystal X-ray diffraction. Their electrochemical and spectroelectrochemical behavior was evaluated in two different media. In 0.1 M KNO3, both complexes exhibit a well-defined Cu(II)/Cu(I) redox couple. In contrast, in 0.1 M phosphate-buffered saline (PBS), consecutive Cu(II)/Cu(0)/Cu(I) redox processes are observed. This change in electrochemical behavior is attributed to specific interactions between the copper complexes and phosphate species at the electrode-solution interface. The molecular catalysis of H2O2 reduction was investigated by cyclic voltammetry, and the catalytic rate constants (k) were determined using Foot of the wave analysis of voltammograms recorded at different scan rates. A comparison with other copper complexes reported in the literature, particularly with a synthesized derivative containing the π-acceptor ligand tris(2-pyridylmethyl)amine (tpa) is also presented. Finally, the interaction between H2O2 and the cationic Cu(II) species was examined using computational methods based on the Quantum Theory of Atoms in Molecules (QTAIM).
本文研究了含氮σ-供体脂肪族多胺配体的铜配合物[Cu(tren)Cl]Cl和[Cu(teta)Cl]PF6 (tren =三(2-氨基乙基)胺,teta =三乙烯四胺)对过氧化氢还原的分子催化作用。与先前报道的含有π受体多吡啶配体的铜配合物相比,这些脂肪族配体提供了更强的电催化活性Cu(II)物种的稳定性。合成了这些配合物,并利用标准分析技术,包括单晶x射线衍射,对其进行了全面表征。在两种不同的介质中评价了它们的电化学和光谱电化学行为。在0.1 M KNO3中,两种配合物均表现出明确的Cu(II)/Cu(I)氧化还原偶。相反,在0.1 M磷酸盐缓冲盐水(PBS)中,观察到连续的Cu(II)/Cu(0)/Cu(I)氧化还原过程。这种电化学行为的变化归因于铜配合物和磷酸盐在电极-溶液界面上的特定相互作用。采用循环伏安法研究了H2O2还原的分子催化作用,并对不同扫描速率下记录的伏安图进行了波脚分析,确定了催化速率常数k。并与文献报道的其他铜配合物进行了比较,特别是与含有π受体配体三(2-吡啶基甲基)胺(tpa)的合成衍生物进行了比较。最后,利用基于分子原子量子理论(QTAIM)的计算方法研究了H2O2与阳离子Cu(II)之间的相互作用。
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引用次数: 0
Amidinate stabilized cerium(IV) halide chemistry: synthesis and reactivity 酰胺酸稳定卤化铈化学:合成与反应性
IF 3.2 3区 化学 Q2 CHEMISTRY, INORGANIC & NUCLEAR Pub Date : 2026-05-24 Epub Date: 2026-01-20 DOI: 10.1016/j.ica.2026.123088
Marc Baltrun , Benjamin Wittwer , Sonja Liu , Merlin Kleoff , Alexander Pöthig , Sebastian Riedel , Stephan Hohloch
We present an isostructural series of cerium(IV) amidinate complexes with halide co-ligands ranging from fluoride to iodide. Different routes are presented to access these valuable species, including the use of various oxidants such as the trichloride salt [NEt3Me][Cl3] or the tribromide salt [NMe3Ph][Br3]. In addition, we present the syntheses of rare triflate and cationic cerium(IV) complexes and first insights into the salt metathesis reactivity using (thio-)cyanates and azides are given.
我们提出了一系列同结构的铈(IV)酰胺酸配合物与卤化物共配体,从氟化物到碘化物。提出了不同的途径来获取这些有价值的物种,包括使用各种氧化剂,如三氯盐[NEt3Me][Cl3]或三溴盐[NMe3Ph][Br3]。此外,我们还介绍了稀有三氟酸盐和阳离子铈(IV)配合物的合成,并首次介绍了使用(硫代)氰酸盐和叠氮化物进行盐复分解反应的反应性。
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引用次数: 0
Green synthesis and recognition of Cr₂O₇2− and CrO₄2− ions of a novel Schiff base fluorescent probe 新型希夫碱荧光探针Cr₂O₇2 -和CrO₄2 -离子的绿色合成和识别
IF 3.2 3区 化学 Q2 CHEMISTRY, INORGANIC & NUCLEAR Pub Date : 2026-05-24 Epub Date: 2026-02-07 DOI: 10.1016/j.ica.2026.123120
Yuting Liu , Jiake Zhu , Dawei Yin , Yi Zhou , Chi Dang , Jiabao Chen , Dantong Zhang , Haoyu Wang , Guipeng Wei
This work primarily investigates the green synthesis of 1-ferrocenyl-2-thiazolyl Schiff base (probe L) and its anion recognition performance. Using acetylferrocene as the starting material and p-toluenesulfonic acid as the catalyst, 1-ferrocenyl-2-thiazolyl Schiff base was synthesized and characterized via a solvent-free grinding method. Optimal synthesis conditions were obtained through the optimization of the synthetic method. The anion recognition performance of probe L was explored, and UV–Vis spectroscopy revealed that probe L could specifically recognize Cr2O72− and CrO42− ions with strong anti-interference ability. The effects of time and pH on its recognition performance were further investigated. Quantitative analysis showed that the binding ratios of probe L to Cr2O72− and CrO42− were both 1: 1, with binding constants of 6.8182 × 105 M−1 and 5.7806 × 105 M−1, respectively; the detection limits reached 1.6993 × 10−5 M and 1.6800 × 10−5 M. The complexation mechanism of probe L with Cr2O72− and CrO42− was further illustrated by IR and 1H NMR titrations. In practical applications, probe L can be used to roughly detect Cr2O72− and CrO42− in water samples via test strips, offering a rapid and simple detection method.
本文主要研究了1-二茂铁基-2-噻唑基希夫碱(探针L)的绿色合成及其阴离子识别性能。以乙酰二茂铁为原料,对甲苯磺酸为催化剂,合成了1-二茂铁-2-噻唑基希夫碱,并采用无溶剂研磨法对其进行了表征。通过对合成方法的优化,得到了最佳的合成条件。对探针L的阴离子识别性能进行了研究,紫外可见光谱显示探针L能够特异性识别Cr2O72−和CrO42−离子,具有较强的抗干扰能力。进一步研究了时间和pH对其识别性能的影响。定量分析表明,探针L与Cr2O72−和CrO42−的结合比均为1:1,结合常数分别为6.8182 × 105 M−1和5.7806 × 105 M−1;检出限分别为1.6993 × 10−5 M和1.6800 × 10−5 M。探针L与Cr2O72−和CrO42−的络合机制通过IR和1H NMR滴定进一步证实。在实际应用中,探针L可以通过试纸粗略检测水样中的Cr2O72−和CrO42−,提供了一种快速简便的检测方法。
{"title":"Green synthesis and recognition of Cr₂O₇2− and CrO₄2− ions of a novel Schiff base fluorescent probe","authors":"Yuting Liu ,&nbsp;Jiake Zhu ,&nbsp;Dawei Yin ,&nbsp;Yi Zhou ,&nbsp;Chi Dang ,&nbsp;Jiabao Chen ,&nbsp;Dantong Zhang ,&nbsp;Haoyu Wang ,&nbsp;Guipeng Wei","doi":"10.1016/j.ica.2026.123120","DOIUrl":"10.1016/j.ica.2026.123120","url":null,"abstract":"<div><div>This work primarily investigates the green synthesis of 1-ferrocenyl-2-thiazolyl Schiff base (probe L) and its anion recognition performance. Using acetylferrocene as the starting material and p-toluenesulfonic acid as the catalyst, 1-ferrocenyl-2-thiazolyl Schiff base was synthesized and characterized via a solvent-free grinding method. Optimal synthesis conditions were obtained through the optimization of the synthetic method. The anion recognition performance of probe L was explored, and UV–Vis spectroscopy revealed that probe L could specifically recognize Cr<sub>2</sub>O<sub>7</sub><sup>2−</sup> and CrO<sub>4</sub><sup>2−</sup> ions with strong anti-interference ability. The effects of time and pH on its recognition performance were further investigated. Quantitative analysis showed that the binding ratios of probe L to Cr<sub>2</sub>O<sub>7</sub><sup>2−</sup> and CrO<sub>4</sub><sup>2−</sup> were both 1: 1, with binding constants of 6.8182 × 10<sup>5</sup> M<sup>−1</sup> and 5.7806 × 10<sup>5</sup> M<sup>−1</sup>, respectively; the detection limits reached 1.6993 × 10<sup>−5</sup> M and 1.6800 × 10<sup>−5</sup> M. The complexation mechanism of probe L with Cr<sub>2</sub>O<sub>7</sub><sup>2−</sup> and CrO<sub>4</sub><sup>2−</sup> was further illustrated by IR and <sup>1</sup>H NMR titrations. In practical applications, probe L can be used to roughly detect Cr<sub>2</sub>O<sub>7</sub><sup>2−</sup> and CrO<sub>4</sub><sup>2−</sup> in water samples via test strips, offering a rapid and simple detection method.</div></div>","PeriodicalId":13599,"journal":{"name":"Inorganica Chimica Acta","volume":"595 ","pages":"Article 123120"},"PeriodicalIF":3.2,"publicationDate":"2026-05-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146191019","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Pyridyl hydrazide Schiff base: Structure, spectra, Fluorogenic Al3+ and chromogenic CN− sensors and theoretical interpretation 吡啶酰肼席夫碱:结构、光谱、荧光Al3+和显色CN -传感器和理论解释
IF 3.2 3区 化学 Q2 CHEMISTRY, INORGANIC & NUCLEAR Pub Date : 2026-05-24 Epub Date: 2026-01-28 DOI: 10.1016/j.ica.2026.123098
Sudeep Ranjan Jana , Koushik Saha , Arabinda Chakraborty , Ananya Das Mahapatra , Sukanya Paul , Indrajit Saha , Chittaranjan Sinha
A pyridylhydrazide Schiff base, N’-(2-hydroxy-4,6-dimethoxybenzylidene) picolinohydrazide (H₂L) has been comprehensively characterized by spectroscopic and single crystal X-ray diffraction data. H2L is weakly emissive and shows fluorescence enhancement selectively in CH3CN/H2O (1:99, v/v; HEPES Buffer, pH 7.2) medium for Al3+ ion in presence of fifteen other cations (Na+, K+, Ca2+, Mg2+, Cr3+, Hg2+, Cu2+, Pb2+, Pd2+, Ba2+, Zn2+, Fe3+, Co2+, Ni2+, Cd2+, Ga3+ and In3+) with limit of detection (LOD) 1.32 nM. The probe also shows colour change from colourless to yellow in the CH3CN solution only for CN in presence of eighteen anions (F, Cl, Br, I, NO₃, NO₂, HSO₄, SO₄2−, H₂PO₄, HPO₄2−, ClO₄, SCN, OCN, S₂O₃2−, AsO₂, AsO₄3−, HF₂, N₃) with LOD 0.367 μM. The binding of H₂L separately with Al3+ and CN was supported by 1H NMR spectral titration, IR spectra and Job's Plot analysis revealed 1:1 stoichiometry [H₂LAl3+] and [H₂L + CN]. The probe was also applied for quantitative analysis of Al3+ in pharmaceutical samples (Telma, Nexpro, Diovol, Disprin, Diagene) while H2L absorbed paper strips facilitated rapid on-site detection of Al3+ (fluorogenic) and CN (chromogenic) underscoring its potential use for practical application. Theoretical insights into the electronic transitions were obtained from DFT studies through geometrical optimization of the probe in complexation with Al3+ and CN.
用光谱和单晶x射线衍射数据对一种吡啶酰肼希夫碱N′-(2-羟基-4,6-二甲氧基苄基)吡啶酰肼(H₂L)进行了全面表征。H2L弱发射,在CH3CN/H2O (1:99, v/v; HEPES Buffer, pH 7.2)介质中选择性地增强Al3+离子,同时存在其他15种阳离子(Na+、K+、Ca2+、Mg2+、Cr3+、Hg2+、Cu2+、Pb2+、Pd2+、Ba2+、Zn2+、Fe3+、Co2+、Ni2+、Cd2+、Ga3+、In3+),检出限(LOD)为1.32 nM。在CH3CN溶液中,当18种阴离子(F−、Cl−、Br−、I−、NO₃−、NO₂−、HSO₄−、SO₄2−、H₂PO₄−、HPO₄2−、ClO₄−、SCN−、OCN−、S₂O₃2−、AsO₂−、AsO₄3−、HF₂−、N₃−)存在时,探针的颜色由无色变为黄色,LOD为0.367 μM。1H NMR谱滴定证实了H₂L分别与Al3+和CN -结合,IR光谱和Job’s Plot分析显示[H₂LAl3+]和[H₂L + CN -]的化学计量比例为1:1。该探针还应用于医药样品(Telma, Nexpro, Diovol, Disprin, Diagene)中的Al3+的定量分析,而H2L吸收纸条可快速现场检测Al3+(荧光)和CN -(显色),强调其潜在的实际应用价值。通过与Al3+和CN−络合探针的几何优化,从DFT研究中获得了电子跃迁的理论见解。
{"title":"Pyridyl hydrazide Schiff base: Structure, spectra, Fluorogenic Al3+ and chromogenic CN− sensors and theoretical interpretation","authors":"Sudeep Ranjan Jana ,&nbsp;Koushik Saha ,&nbsp;Arabinda Chakraborty ,&nbsp;Ananya Das Mahapatra ,&nbsp;Sukanya Paul ,&nbsp;Indrajit Saha ,&nbsp;Chittaranjan Sinha","doi":"10.1016/j.ica.2026.123098","DOIUrl":"10.1016/j.ica.2026.123098","url":null,"abstract":"<div><div>A pyridylhydrazide Schiff base, N’-(2-hydroxy-4,6-dimethoxybenzylidene) picolinohydrazide (H₂L) has been comprehensively characterized by spectroscopic and single crystal X-ray diffraction data. H<sub>2</sub>L is weakly emissive and shows fluorescence enhancement selectively in CH<sub>3</sub>CN/H<sub>2</sub>O (1:99, <em>v</em>/v; HEPES Buffer, pH 7.2) medium for Al<sup>3+</sup> ion in presence of fifteen other cations (Na<sup>+</sup>, K<sup>+</sup>, Ca<sup>2+</sup>, Mg<sup>2+</sup>, Cr<sup>3+</sup>, Hg<sup>2+</sup>, Cu<sup>2+</sup>, Pb<sup>2+</sup>, Pd<sup>2+</sup>, Ba<sup>2+</sup>, Zn<sup>2+</sup>, Fe<sup>3+</sup>, Co<sup>2+</sup>, Ni<sup>2+</sup>, Cd<sup>2+</sup>, Ga<sup>3+</sup> and In<sup>3+</sup>) with limit of detection (LOD) 1.32 nM. The probe also shows colour change from colourless to yellow in the CH<sub>3</sub>CN solution only for CN<sup>−</sup> in presence of eighteen anions (F<sup>−</sup>, Cl<sup>−</sup>, Br<sup>−</sup>, I<sup>−</sup>, NO₃<sup>−</sup>, NO₂<sup>−</sup>, HSO₄<sup>−</sup>, SO₄<sup>2−</sup>, H₂PO₄<sup>−</sup>, HPO₄<sup>2−</sup>, ClO₄<sup>−</sup>, SCN<sup>−</sup>, OCN<sup>−</sup>, S₂O₃<sup>2−</sup>, AsO₂<sup>−</sup>, AsO₄<sup>3−</sup>, HF₂<sup>−</sup>, N₃<sup>−</sup>) with LOD 0.367 μM. The binding of H₂L separately with Al<sup>3+</sup> and CN<sup>−</sup> was supported by <sup>1</sup>H NMR spectral titration, IR spectra and Job's Plot analysis revealed 1:1 stoichiometry [H₂L<img>Al<sup>3+</sup>] and [H₂L + CN<sup>−</sup>]. The probe was also applied for quantitative analysis of Al<sup>3+</sup> in pharmaceutical samples (Telma, Nexpro, Diovol, Disprin, Diagene) while H<sub>2</sub>L absorbed paper strips facilitated rapid on-site detection of Al<sup>3+</sup> (fluorogenic) and CN<sup>−</sup> (chromogenic) underscoring its potential use for practical application. Theoretical insights into the electronic transitions were obtained from DFT studies through geometrical optimization of the probe in complexation with Al<sup>3+</sup> and CN<sup>−</sup>.</div></div>","PeriodicalId":13599,"journal":{"name":"Inorganica Chimica Acta","volume":"595 ","pages":"Article 123098"},"PeriodicalIF":3.2,"publicationDate":"2026-05-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146077053","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Synthesis, structural insights, antimicrobial and cytotoxic potentials of Mn(II) and Fe(III) complexes with a novel Triazine–Quinoline ligand 一种新型三嗪-喹啉配体Mn(II)和Fe(III)配合物的合成、结构研究、抗菌和细胞毒性潜力
IF 3.2 3区 化学 Q2 CHEMISTRY, INORGANIC & NUCLEAR Pub Date : 2026-05-24 Epub Date: 2026-02-06 DOI: 10.1016/j.ica.2026.123114
Amal Yousri , Esraa Alaa , Francoise M. Amombo Noa , Lars Öhrström , Ayman El-Faham , Morsy A.M. Abu-Youssef , Saied M. Soliman , Eman M. Fathalla , Sara M. Khattab
Two novel Mn(II) and Fe(III) complexes were synthesized using a newly developed s-triazine ligand, N-(4,6-bis(3,5-dimethyl-1H-pyrazol-1-yl)-1,3,5-triazin-2-yl)quinolin-8-amine, and their structures were fully confirmed using single-crystal X-ray diffraction. The Mn(II) ion is penta-coordinated with one NNN-tridentate chelate and two chloride ions leading to the [MnLCl2] formula for 1. The [Fe2L2(μ-O)(H2O)4](NO3)4.3H2O comprised two hexacoordinated Fe(III) centers connected by an oxo bridge where each metal center is further coordinated with one NNN-tridentate chelate L and two water molecules. Hirshfeld analysis disclosed the highest contributing intermolecular interactions in the crystal of 1 to be H···H (43.3%), Cl···H (20.7%), and C···H (11.3%). For 2, the main contributions are H···H (39.7 and 40.3%), O···H (33.6 and 32.0%), and H···C (16.0 and 15.9%), for units A and B, respectively. Atoms in molecules (AIM) analysis indicates that the Mn–N, Fe–N, and terminal Fe–O bonds are predominantly closed-shell in nature, while modest covalent character is observed for the Mn–Cl and bridging Fe–O bonds. Moreover, 1 and 2 exhibited enhanced anticancer activities than the free ligand L against HCT-116 and A-549 cancer cell lines, where 2 being the most potent (IC50 values of 9.05 ± 0.21 and 10.67 ± 0.25 μM, respectively). Compared to cis-platin, 1 and 2 demonstrated greater cytotoxic effects against HCT-116 cells (∼1.2- and 3.1-fold, respectively). Additionally, the free ligand exhibited the strongest antimicrobial activity against B. subtilis and C. albicans with inhibition zone diameters (IZDs) of 18 and 11 mm, respectively, while 2 is more effective against P.vulgaris, with an IZD of 15 mm.
用新开发的s-三嗪配体N-(4,6-二(3,5-二甲基- 1h -吡唑-1-基)-1,3,5-三嗪-2-基)喹啉-8-胺合成了两种新型Mn(II)和Fe(III)配合物,并用单晶x射线衍射完全证实了它们的结构。Mn(II)离子与一个nnn -三齿螯合物和两个氯离子五配位,从而得到[MnLCl2]式1。[Fe2L2(μ-O)(H2O)4](NO3)4.3H2O由两个六配位的Fe(III)中心组成,通过氧桥连接,每个金属中心进一步与一个nnn -三齿螯合物L和两个水分子配位。Hirshfeld分析显示,晶体1中贡献最大的分子间相互作用是H··H(43.3%)、Cl··H(20.7%)和C··H(11.3%)。对于2,单位A和单位B的主要贡献分别是H··H(39.7%和40.3%)、O··H(33.6%和32.0%)和H··C(16.0%和15.9%)。分子内原子(AIM)分析表明,Mn-N、Fe-N和末端Fe-O键本质上主要是闭壳键,而Mn-Cl和桥接Fe-O键则具有适度的共价特征。此外,1和2对HCT-116和A-549癌细胞的抗肿瘤活性高于游离配体L,其中2的IC50值最高(分别为9.05±0.21 μM和10.67±0.25 μM)。与顺式铂相比,1和2对HCT-116细胞表现出更大的细胞毒性作用(分别为1.2倍和3.1倍)。另外,游离配体对枯草芽孢杆菌和白色念珠菌的抑菌活性最强,抑菌带直径分别为18和11 mm,而2对普通假单胞菌的抑菌带直径为15 mm。
{"title":"Synthesis, structural insights, antimicrobial and cytotoxic potentials of Mn(II) and Fe(III) complexes with a novel Triazine–Quinoline ligand","authors":"Amal Yousri ,&nbsp;Esraa Alaa ,&nbsp;Francoise M. Amombo Noa ,&nbsp;Lars Öhrström ,&nbsp;Ayman El-Faham ,&nbsp;Morsy A.M. Abu-Youssef ,&nbsp;Saied M. Soliman ,&nbsp;Eman M. Fathalla ,&nbsp;Sara M. Khattab","doi":"10.1016/j.ica.2026.123114","DOIUrl":"10.1016/j.ica.2026.123114","url":null,"abstract":"<div><div>Two novel Mn(II) and Fe(III) complexes were synthesized using a newly developed <em>s</em>-triazine ligand, <em>N</em>-(4,6-<em>bis</em>(3,5-dimethyl-1<em>H</em>-pyrazol-1-yl)-1,3,5-triazin-2-yl)quinolin-8-amine, and their structures were fully confirmed using single-crystal X-ray diffraction. The Mn(II) ion is penta-coordinated with one <em>NNN</em>-tridentate chelate and two chloride ions leading to the [MnLCl<sub>2</sub>] formula for <strong>1</strong>. The [Fe<sub>2</sub>L<sub>2</sub>(<em>μ</em>-O)(H<sub>2</sub>O)<sub>4</sub>](NO<sub>3</sub>)<sub>4</sub>.3H<sub>2</sub>O comprised two hexacoordinated Fe(III) centers connected by an oxo bridge where each metal center is further coordinated with one <em>NNN</em>-tridentate chelate <strong>L</strong> and two water molecules. Hirshfeld analysis disclosed the highest contributing intermolecular interactions in the crystal of <strong>1</strong> to be H···H (43.3%), Cl···H (20.7%), and C···H (11.3%). For <strong>2</strong>, the main contributions are H···H (39.7 and 40.3%), O···H (33.6 and 32.0%), and H···C (16.0 and 15.9%), for units <strong>A</strong> and <strong>B</strong>, respectively. Atoms in molecules (AIM) analysis indicates that the Mn–N, Fe–N, and terminal Fe–O bonds are predominantly closed-shell in nature, while modest covalent character is observed for the Mn–Cl and bridging Fe–O bonds. Moreover, <strong>1</strong> and <strong>2</strong> exhibited enhanced anticancer activities than the free ligand <strong>L</strong> against HCT-116 and A-549 cancer cell lines, where <strong>2</strong> being the most potent (IC<sub>50</sub> values of 9.05 ± 0.21 and 10.67 ± 0.25 μM, respectively). Compared to <em>cis</em>-platin, <strong>1</strong> and <strong>2</strong> demonstrated greater cytotoxic effects against HCT-116 cells (∼1.2- and 3.1-fold, respectively). Additionally, the free ligand exhibited the strongest antimicrobial activity against <em>B. subtilis</em> and <em>C. albicans</em> with inhibition zone diameters (IZDs) of 18 and 11 mm, respectively, while <strong>2</strong> is more effective against <em>P.vulgaris,</em> with an IZD of 15 mm.</div></div>","PeriodicalId":13599,"journal":{"name":"Inorganica Chimica Acta","volume":"595 ","pages":"Article 123114"},"PeriodicalIF":3.2,"publicationDate":"2026-05-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146190998","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Design, synthesis, structural and supramolecular insights of Ni(II), Co(II), and Mn(II) ternary imidazole complexes with Giant s-triazine ligand bearing Isatin arms Ni(II)、Co(II)和Mn(II)三元咪唑配合物的设计、合成、结构和超分子研究
IF 3.2 3区 化学 Q2 CHEMISTRY, INORGANIC & NUCLEAR Pub Date : 2026-05-24 Epub Date: 2026-02-01 DOI: 10.1016/j.ica.2026.123101
Farha A. Ali , Nahed M.H. Salem , Tarek E. Khalil , Saied M. Soliman , Assem Barakat , Matti Haukka , Ayman El-Faham , Raghdaa A. Massoud
Newly synthesized multidentate s-triazine bis-Schiff base ligand H2L [(3Z,3′E)-3,3′-((6-morpholino-1,3,5-triazine-2,4-diyl)bis(hydrazin-2-yl-1-ylidene))bis(indolin-2-one)] and its three ternary complexes [Ni(L)(Im)2].6H2O; 1, [Mn(L)(Im)2].½Im*3H2O; 2, and [Co(L)(Im)2].½EtOH*H2O; 3 were prepared and thoroughly characterized using spectroscopic methods and theoretical studies. X-ray crystal structure of 1 and 2 complexes revealed that the central metal ion, M(II), is chelated by the dinegative pentadentate (N3O2) ligand (L)−2 and two axially imidazole (Im) groups, resulting in a distorted pentagonal bipyramidal geometry. In contrast, in complex 3, Co(II) is bound to a dinegative tetradentate (N3O) (L)−2 ligand and two axial imidazole moieties forming a distorted octahedral geometry. Hirshfeld surface and energy framework analyses revealed that dispersion forces dominate the supramolecular architecture of complexes 1 and 2 (Edis= − 303.494 and − 215.880 kJ/mol, respectively), whereas in 3, electrostatic force (Eele = −376.215 kJ/mol) plays the primary role. Atoms in molecules calculations (AIM) indicate that most of M-O and M-N bonds in 1 exhibit covalent character, whereas those in 2 and 3 reveal mostly closed-shell nature. Moreover, the charge of central Ni(II), Mn(II), and Co(II) are reduced upon complexation with ligand units to 0.8326, 1.0526, and 0.8564e for 1, 2, and 3, respectively. Biological evaluation demonstrated that 1 and 3 showed greater activity compared to the free ligand against Gram-positive and Gram-negative bacteria. Notably, their activity against S. aureus was similar to the reference gentamicin, producing a 20 mm inhibition zone and a minimum inhibitory concentration (MIC) of 213–217 μM. Safety evaluation of the studied compounds indicated no cytotoxic impact on normal lung fibroblast WI-38 cell line.
新合成的多齿s-三嗪双希夫碱配体H2L [(3Z, 3e)-3,3 ' -((6-亚硝基-1,3,5-三嗪-2,4-二基)双(肼-2-基-1-酰基))双(吲哚林-2- 1)]及其三个三元配合物[Ni(L)(Im)2].6H2O;1, [Mn (L) (Im) 2]。½Im * 3 h2o;[Co(L)(Im)2].½EtOH*H2O;用光谱方法和理论研究对3种化合物进行了表征。1和2配合物的x射线晶体结构显示,中心金属离子M(II)被负五齿(N3O2)配体(L)−2和两个轴向咪唑(Im)基团螯合,形成扭曲的五边形双锥体结构。相反,在配合物3中,Co(II)与负四齿(n30o) (L)−2配体和两个轴向咪唑基团结合,形成扭曲的八面体结构。Hirshfeld表面和能量框架分析表明,在配合物1和2的超分子结构中,色散力占主导地位(Edis分别为- 303.494和- 215.880 kJ/mol),而在配合物3中,静电力(Eele = - 376.215 kJ/mol)起主要作用。分子原子计算(AIM)表明,1中的M-O和M-N键大部分表现为共价键,而2和3中的M-O和M-N键大多表现为闭壳键。此外,中心Ni(II)、Mn(II)和Co(II)的电荷在与配体单位络合后分别降至0.8326、1.0526和0.8564e,分别为1、2和3。生物学评价表明,与游离配体相比,1和3对革兰氏阳性和革兰氏阴性细菌具有更大的活性。值得注意的是,它们对金黄色葡萄球菌的活性与对照庆大霉素相似,产生20 mm的抑制带,最小抑制浓度(MIC)为213 ~ 217 μM。所研究化合物的安全性评价表明,对正常肺成纤维细胞WI-38细胞系无细胞毒性影响。
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引用次数: 0
Ligand-directed assembly of four new Ni(II)-based coordination polymers: structures, Hirshfeld surface analyses and electrochemical properties 四种新型Ni(II)基配位聚合物的配体定向组装:结构、Hirshfeld表面分析和电化学性质
IF 3.2 3区 化学 Q2 CHEMISTRY, INORGANIC & NUCLEAR Pub Date : 2026-05-24 Epub Date: 2026-01-28 DOI: 10.1016/j.ica.2026.123092
Jiao Guo , Xin-Hong Li , Ya-Kun Zhang , Wei Zhang , Ai-Min Chen , Yuan-Chun He
Coordination polymers (CPs) have garnered significant attention due to their structural diversity and functional versatility, driven by the reasonable selection of metal centers and organic ligands. In this work, we synthesizes and characterizes four new Ni(II)-based CPs based on 1-(3-carboxybenzyl)-1H-pyrazole-4-carboxylic acid (H2CBPC) and auxiliary N-donor ligands. The structures were determined by single-crystal X-ray diffraction and exhibit diversity influenced by ligand coordination modes, the presence of auxiliary N-donor ligands, and weak interactions. Hirshfeld surface analyses quantified intermolecular interactions, highlighting the role of non-covalent forces in stabilizing supramolecular architectures. Furthermore, compounds 14 were investigated as anode materials for lithium-ion batteries. The charge-discharge curves, cycling performance, and rate capability of these four compounds have been thoroughly tested. All charge-discharge curves demonstrate poor specific capacity, while cycling tests and rate capability assessments indicate reasonable cycling stability. While they do not exhibit particularly outstanding performance compared to other materials, the results still offer valuable insights for the development of lithium-ion battery anodes.
配位聚合物(CPs)由于其结构的多样性和功能的多功能性,在合理选择金属中心和有机配体的驱动下获得了广泛的关注。本文以1-(3-羧基苄基)- 1h -吡唑-4-羧酸(H2CBPC)和辅助n给体为配体,合成并表征了四种新的Ni(II)基CPs。通过单晶x射线衍射确定了其结构,并显示出配体配位模式、辅助n -供体配体的存在和弱相互作用影响的多样性。Hirshfeld表面分析量化了分子间的相互作用,强调了非共价力在稳定超分子结构中的作用。此外,还研究了化合物1 ~ 4作为锂离子电池负极材料。对这四种化合物的充放电曲线、循环性能和倍率性能进行了全面测试。所有的充放电曲线都显示出较差的比容量,而循环测试和倍率能力评估显示出合理的循环稳定性。虽然与其他材料相比,它们并没有表现出特别突出的性能,但研究结果仍然为锂离子电池阳极的开发提供了有价值的见解。
{"title":"Ligand-directed assembly of four new Ni(II)-based coordination polymers: structures, Hirshfeld surface analyses and electrochemical properties","authors":"Jiao Guo ,&nbsp;Xin-Hong Li ,&nbsp;Ya-Kun Zhang ,&nbsp;Wei Zhang ,&nbsp;Ai-Min Chen ,&nbsp;Yuan-Chun He","doi":"10.1016/j.ica.2026.123092","DOIUrl":"10.1016/j.ica.2026.123092","url":null,"abstract":"<div><div>Coordination polymers (CPs) have garnered significant attention due to their structural diversity and functional versatility, driven by the reasonable selection of metal centers and organic ligands. In this work, we synthesizes and characterizes four new Ni(II)-based CPs based on 1-(3-carboxybenzyl)-1H-pyrazole-4-carboxylic acid (H<sub>2</sub>CBPC) and auxiliary N-donor ligands. The structures were determined by single-crystal X-ray diffraction and exhibit diversity influenced by ligand coordination modes, the presence of auxiliary N-donor ligands, and weak interactions. Hirshfeld surface analyses quantified intermolecular interactions, highlighting the role of non-covalent forces in stabilizing supramolecular architectures. Furthermore, compounds <strong>1</strong>–<strong>4</strong> were investigated as anode materials for lithium-ion batteries. The charge-discharge curves, cycling performance, and rate capability of these four compounds have been thoroughly tested. All charge-discharge curves demonstrate poor specific capacity, while cycling tests and rate capability assessments indicate reasonable cycling stability. While they do not exhibit particularly outstanding performance compared to other materials, the results still offer valuable insights for the development of lithium-ion battery anodes.</div></div>","PeriodicalId":13599,"journal":{"name":"Inorganica Chimica Acta","volume":"595 ","pages":"Article 123092"},"PeriodicalIF":3.2,"publicationDate":"2026-05-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146077054","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
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Inorganica Chimica Acta
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