Journal of Organometallic Chemistry最新文献_第10页

g-C3N4 nanosheet-loaded Bi2WO6 nanoplates for improving photocatalytic degradation of organic pollutants g-C3N4纳米片负载Bi2WO6纳米片改善光催化降解有机污染物

IF 2.1 3区化学 Q3 CHEMISTRY, INORGANIC & NUCLEAR

Journal of Organometallic Chemistry

Pub Date : 2025-10-13 DOI: 10.1016/j.jorganchem.2025.123892

Amira Masoud , M.A. Ahmed , Fritz Kühn , Ghada Bassioni

Bi₂WO₆g-C₃N₄, displaying a binary hetero-structure can be prepared by an ultrasonic chemical method. The photocatalytic characteristics of X% (X = 5, 10, 15) Bi₂WO₆g-C₃N₄ nanocomposites are investigated for Rhodamine-B (Rh-B(degradation under ultraviolet irradiation. The photocatalytic performance of the Bi₂WO₆/g-C₃N₄ heterojunction was found to strongly depend on the Bi₂WO₆ loading. Among the investigated composites, the 10 % Bi₂WO₆/g-C₃N₄ heterojunction demonstrated the most efficient activity, showing a remarkable ability to degrade 90.1 % of Rhodamine B (Rh-B) within 120 min under UV irradiation. This performance is significantly superior not only to the pristine g-C₃N₄ and Bi₂WO₆ but also to the other heterostructures containing 5 % and 15 % Bi₂WO₆. For instance, pure g-C₃N₄ achieved only 28.99 % degradation of Rh-B under identical conditions, which clearly highlights the enhanced charge separation and improved interfacial interaction in the 10 % Bi₂WO₆/g-C₃N₄ composite. These findings confirm that the optimized 10 % loading provides the best balance between the active surface area, light-harvesting capability, and charge transfer efficiency, leading to a substantial enhancement in photocatalytic activity compared with both the bare components and the other composite ratios. The Z-scheme pathway of the 10 % Bi₂WO₆g-C₃N₄ heterojunction demonstrates that this combination able to transfer charges efficiently and that the photogenerated carriers' recombination is suppressed. According to a radical trapping experiment, ^•O₂^– and holes (h⁺) account for the most important reactive species in the Rh-B photolysis. Moreover, the 10 % Bi₂WO₆g-C₃N₄ nanocomposite reveals elevated reusability and stability for at least four successive cycles.

显示二元异质结构的Bi2WO6g-C3N4可以用超声波化学方法制备。研究了X% (X = 5,10,15) Bi2WO6g-C3N4纳米复合材料在紫外光照射下降解罗丹明- b （Rh-B）的光催化特性。Bi₂WO₆/g-C₃N₄异质结的光催化性能与Bi₂WO₆的载货量密切相关。在所研究的复合材料中，10% Bi₂WO₆/g-C₃N₄异质结的活性最高，在紫外线照射下120 min内对90.1%的罗丹明B （Rh-B）具有显著的降解能力。这种性能不仅明显优于原始的g-C₃N₄和Bi₂WO₆，而且也优于其他含有5%和15% Bi₂WO₆的异质结构。例如，在相同的条件下，纯g-C₃N₄对Rh-B的降解率仅为28.99%，这明显突出了10% Bi₂WO₆/g-C₃N₄复合材料中电荷分离的增强和界面相互作用的改善。这些发现证实，优化后的10%负载在活性表面积、光收集能力和电荷转移效率之间提供了最佳平衡，与裸组分和其他复合比例相比，光催化活性得到了显著增强。10% Bi2WO6g-C3N4异质结的Z-scheme路径表明，这种组合能够有效地转移电荷，并且光生载流子的重组被抑制。根据自由基捕获实验，•O2 -和空穴（h+）是Rh-B光解反应中最重要的反应物质。此外，10% Bi2WO6g-C3N4纳米复合材料显示出至少四个连续循环的可重用性和稳定性。

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引用次数: 0

Palladium nanoparticles stabilized by [BMIM]-Alginate BioIL for ligand-free Suzuki-Miyaura cross-coupling reaction at room temperature [BMIM]-海藻酸盐BioIL稳定钯纳米颗粒在室温下用于无配体铃木-宫浦交叉偶联反应

IF 2.1 3区化学 Q3 CHEMISTRY, INORGANIC & NUCLEAR

Journal of Organometallic Chemistry

Pub Date : 2025-10-13 DOI: 10.1016/j.jorganchem.2025.123898

Archana Rajmane, Arjun Kumbhar

A new biobased BMIM-Alginate ionic liquid (BioIL) was synthesized by stirring an aqueous solution of [BMIM]OH and Alginic acid. The in situ generated palladium nanoparticles (PdNPs) dispersed in BMIM-Alginate (PdNPs-BioIL) was used for the synthesis of biaryls via Suzuki-Miyaura coupling reactions. The TEM and XPS analysis confirmed the formation of PdNPs. TEM images of the catalyst showed that PdNPs (50-80 nm) were evenly dispersed in the bio-ionic polymeric matrix. The in situ generated PdNPs showed good to excellent catalytic activity for coupling aryl bromides with arylboronic acids in the presence of K₂CO₃ as a base in ethanol at RT. For comparison, PdNPs were also generated in situ and dispersed in a Na-Alginate matrix under similar reaction conditions. The catalytic behavior of the PdNPs in the two materials was notably different. PdNPs stabilized by [BMIM]-Alginate proved to be more active than those by Na-Alginate. Additionally, the PdNPs stabilized by [BMIM]-Alginate demonstrated at least five reuses with only a slight decrease in catalytic activity.

以[BMIM]OH和海藻酸为溶剂，通过搅拌合成了一种新型生物基BMIM-海藻酸盐离子液体（BioIL）。将原位生成的分散在bmi -海藻酸盐中的钯纳米粒子（PdNPs- bioil）通过Suzuki-Miyaura偶联反应合成了双芳基。TEM和XPS分析证实了PdNPs的形成。催化剂的TEM图像表明，PdNPs （50 ~ 80 nm）均匀分布在生物离子聚合物基质中。原位生成的PdNPs在乙醇中以K2CO3为碱存在时，对芳基溴化物与芳基硼酸的偶联表现出良好至优异的催化活性。相比之下，在相似的反应条件下，原位生成的PdNPs也分散在Na-Alginate基质中。PdNPs在两种材料中的催化行为有显著差异。[BMIM]-藻酸盐稳定的PdNPs比na -藻酸盐稳定的PdNPs活性更高。此外，由[BMIM]-海藻酸盐稳定的PdNPs至少有5次重复使用，催化活性仅略有下降。

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引用次数: 0

Construction of green, sustainable, and versatile hybrid catalyst using Pd-loaded carboxymethyl cellulose–activated carbon beads for efficient reduction of environmental pollutants 构建绿色，可持续，多用途的混合催化剂，使用负载pd的羧甲基纤维素-活性炭珠，有效减少环境污染物

IF 2.1 3区化学 Q3 CHEMISTRY, INORGANIC & NUCLEAR

Journal of Organometallic Chemistry

Pub Date : 2025-10-12 DOI: 10.1016/j.jorganchem.2025.123896

Hatice Kübra Akyol , Nuray Yılmaz Baran , Talat Baran

Water/wastewater treatment is crucial for protecting the ecosystem and ensuring the adequate use of freshwater resources due to the depletion of water resources worldwide. Freshwater resources is at risk due to the presence of toxic pollutants such as nitroaromatics and organic dyes, which contribute to water pollution. Thus, the removal of these pollutants is of great importance to human health. In this study, we developed an innovative hybrid catalyst by decorating palladium nanoparticles onto carboxymethyl cellulose–activated carbon hydrogel beads (Pd@NaCMC/AC), which serve as the support material (NaCMC/AC), and characterized its structure using FTIR, XRD, EDS, FE-SEM, and TEM analyses. Then, its performance was assessed against reduction of nitroaromatics (4-nitro-o-phenylenediamine (4-PDA), 2-nitroaniline (2-NA), 4-nitrophenol (4-NP), and 4-nitroaniline (4-NA)), organic dyes (methyl orange (MO), methylene blue (MB), and rhodamine B (RhB)), as well as mixed pollutants. Pd@NaCMC/AC efficiently reduced 4-PDA, 2-NA, 4-NP, and 4-NA in 52, 40, 90, and 48 s, respectively, with corresponding rate constants of 0.018, 0.032, 0.014, and 0.030 s⁻¹. Additionally, MO was reduced with rate constant of in 30 s with 0.024 s⁻¹ and RhB in - 80 s with 0.025 s⁻¹, while MB was removed instantly. Pd@NaCMC/AC also exhibited good performance against the mixed 4-NP+MB pollutant, successfully reducing both contaminants. Moreover, for the 2-NA reduction catalyzed by Pd@NaCMC/AC, the activation energy was determined to be 20.095 kj/mol. The Pd@NaCMC/AC demonstrated good recyclability, maintaining its performance over six cycles.

由于全世界水资源的枯竭，水/废水处理对于保护生态系统和确保淡水资源的充分利用至关重要。由于存在有毒污染物，如硝基芳烃和有机染料，淡水资源处于危险之中，这些污染物会造成水污染。因此，清除这些污染物对人类健康具有重要意义。在本研究中，我们将钯纳米颗粒修饰在羧甲基纤维素-活性炭水凝胶珠（Pd@NaCMC/AC）上，作为支撑材料（NaCMC/AC），并通过FTIR、XRD、EDS、FE-SEM和TEM分析对其结构进行了表征。然后，对其对硝基芳烃（4-硝基-邻苯二胺（4-PDA）、2-硝基苯胺（2-NA）、4-硝基苯酚（4-NP）和4-硝基苯胺（4-NA））、有机染料（甲基橙（MO）、亚甲基蓝（MB）和罗丹明B (RhB)）以及混合污染物的还原性能进行了评价。Pd@NaCMC/AC还原4-PDA、2-NA、4-NP和4-NA的时间分别为52秒、40秒、90秒和48秒，相应的速率常数为0.018秒、0.032秒、0.014秒和0.030秒。此外，MO和RhB的速率常数分别为- 30秒（0.024秒）和- 80秒（0.025秒），而MB则被立即清除。Pd@NaCMC/AC对混合4-NP+MB污染物也表现出良好的性能，成功地减少了这两种污染物。此外，Pd@NaCMC/AC催化的2-NA还原反应的活化能为20.095 kj/mol。Pd@NaCMC/AC表现出良好的可回收性，在六个循环中保持其性能。

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引用次数: 0

Biosketch - Thomas Strassner 生物小品——托马斯·斯特拉斯纳

IF 2.1 3区化学 Q3 CHEMISTRY, INORGANIC & NUCLEAR

Journal of Organometallic Chemistry

Pub Date : 2025-10-12 DOI: 10.1016/j.jorganchem.2025.123895

Thomas Strassner, Richard D. Adams

引用次数: 0

Elucidation of coordination geometries and intermetallic interactions in electronically modified NHC complexes of group 10 and 11 基团10和11电子修饰的NHC配合物的配位几何和金属间相互作用的阐明

IF 2.1 3区化学 Q3 CHEMISTRY, INORGANIC & NUCLEAR

Journal of Organometallic Chemistry

Pub Date : 2025-10-10 DOI: 10.1016/j.jorganchem.2025.123889

Simon Stifel, Wolfgang R.E. Büchele, Leon F. Richter, Christian Jandl, Fritz E. Kühn

The synthesis and characterization of group 10 (Ni^II, Pd^II, Pt^II) and group 11 (Cu^I, Ag^I, Au^I, Au^III) N–heterocyclic carbene (NHC) complexes supported by a methyl–substituted macrocyclic ligand is reported. NMR, ESI–MS, elemental analysis, and single–crystal X–ray diffraction (SC–XRD) confirm their structure. The d⁸ metals adopt square–planar geometries, with M–C bond lengths increasing from Ni to Pt and reduced backbone distortion. The d¹⁰ series forms tetranuclear Cu₄L₂, Ag₄L₂, and Au₄L₂ species featuring cuprophilic, argentophilic, and aurophilic interactions stabilized by the rigid macrocyclic scaffold. Comparative analysis reveals that methyl substitution enhances σ–donor character at the carbene center, promoting close metal–metal contacts. Hirshfeld surface and void analyses further confirm that crystal packing is dominated by H⋯H and C–H⋯F contacts, with minimal π–π stacking or intermolecular metallophilic interactions, and that packing efficiency varies from nearly space–filling (Ni3-OTf, Pd3-OTf, Pt3-OTf) to more open frameworks (Ag₄(3)₂-PF₆, Au₄(3)₂-PF₆). These structural and electronic insights underline the potential of macrocyclic NHCs for future applications.

报道了甲基取代大环配体负载的10基（NiII, PdII, PtII）和11基（CuI, AgI, AuI, AuIII） n -杂环碳（NHC）配合物的合成和表征。核磁共振、ESI-MS、元素分析和单晶x射线衍射（SC-XRD）证实了它们的结构。d8金属采用方形平面几何形状，从Ni到Pt， M-C键长度增加，主链畸变减小。d10系列形成四核Cu4L2， Ag4L2和Au4L2，具有亲铜，亲银和亲金相互作用，由刚性大环支架稳定。对比分析表明，甲基取代增强了碳中心的σ给体特征，促进了金属-金属的紧密接触。Hirshfeld表面和空洞分析进一步证实，晶体填充由H⋯H和C-H⋯F接触主导，具有最小的π -π堆叠或分子间亲金属相互作用，并且填充效率从接近空间填充（Ni3-OTf, Pd3-OTf, p3 - otf）到更开放的框架(Ag4（3)2-PF6, Au4(3)2-PF6）变化。这些结构和电子方面的见解强调了大环NHCs在未来应用中的潜力。

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引用次数: 0

Pincer complexes of PNN ligands and NiII catalyzed Markovnikov-selective hydroboration of styrene PNN配体和NiII的钳形配合物催化苯乙烯的马尔可夫尼科夫选择性硼化反应

IF 2.1 3区化学 Q3 CHEMISTRY, INORGANIC & NUCLEAR

Journal of Organometallic Chemistry

Pub Date : 2025-10-10 DOI: 10.1016/j.jorganchem.2025.123894

Khilesh C. Dwivedi, Gazal Sabharwal, Maravanji S. Balakrishna

In this study, we report the synthesis and structural characterization of a series of pincer complexes derived from two pincer-type ligands: {(o-Ph₂P)C₆H₄N(H)C₉H₆N} (1) and {(o-PPh₂)C₆H₄C(O)N(H)C₉H₆N} (2). Treatment of 1 with various metal precursors afforded pincer complexes [MX{(o-PPh₂)C₆H₄N(C₉H₆N)}κ³-P,N,N] {M = Ni, X = Cl, 3; M = Pd, X = Cl, 4; M = Pd, X = OAc; 5, M = Pt, X = Cl; 6, M = Rh, X = CO, 7}. Similar reactions of 2 also resulted in the pincer complexes [MX{(o-PPh₂)C₆H₄C(O)N(C₉H₆N)}κ³-P,N,N] {M = Ni, X = Cl, 8; M = Pd, X = Cl, 9; M = Pd, X = OAc; 10, M = Pt, X = Cl; 11}. The Ni^II pincer complex 8 exhibited remarkable catalytic efficiency in the Markovnikov-selective hydroboration of styrene derivatives under mild reaction conditions. The catalytic system demonstrated excellent tolerance toward electron-donating substituents; however, its activity was notably diminished in the presence of electron-withdrawing or sterically encumbered alkenes.

在本研究中，我们报道了由两个钳型配体{(O - ph2p)C6H4N(H)C9H6N}(1)和{(O - pph2)C6H4C(O)N(H)C9H6N}(2)衍生的一系列钳形配合物的合成和结构表征。不同金属前驱体处理1得到钳形配合物[MX{(o-PPh2)C6H4N(C9H6N)}κ3-P，N,N] {M = Ni, X = Cl, 3；M = Pd, X = Cl, 4；M = Pd, X = OAc；5、M = Pt, X = Cl；6、M = Rh, X = CO, 7}。2的类似反应也产生钳形配合物[MX{(O - pph2)C6H4C(O)N(C9H6N)}κ3-P，N,N] {M = Ni, X = Cl, 8；M = Pd, X = Cl, 9；M = Pd, X = OAc；10、M = Pt, X = Cl；11}。NiII螯合物8在温和反应条件下对苯乙烯衍生物的马尔可夫尼科夫选择性硼氢化反应表现出显著的催化效率。该催化体系对供电子取代基表现出良好的耐受性；然而，它的活性在吸电子或位阻烯烃的存在下明显降低。

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引用次数: 0

Synthesis and performance assessment of β-MoO3 and α-MoO3 decorated by reduced graphene oxide/polymer dot for energy storage applications 还原氧化石墨烯/聚合物点修饰储能用β-MoO3和α-MoO3的合成及性能评价

IF 2.1 3区化学 Q3 CHEMISTRY, INORGANIC & NUCLEAR

Journal of Organometallic Chemistry

Pub Date : 2025-10-08 DOI: 10.1016/j.jorganchem.2025.123893

Fariba Alimola, Nasser Arsalani, Robab Aslani

In this study, three nanocomposites based on polymer dots and molybdenum oxide with alpha and beta phases, and reduced graphene oxide were synthesized. The effect of increasing the surface functional groups of polymer dots by adding polyethylene glycol diacid was investigated. Polyethylene glycol diacid not only the CO₂H, CHO, and NH₂ on the polymer dots increase (to improve the supercapacitor behavior) but also to the phases of the molybdenum oxide converted from beta to alpha. Since the morphology of the alpha phase is plate-shaped, the performance of the supercapacitor was improved. Finally, reduced graphene oxide was added to the nanocomposite structure to improve the electrical conductivity. The supercapacitor behavior of nanocomposites was investigated as an electrode material, and a symmetric device was manufactured of optimized nanocomposite (PD_PJ-α-MoO₃-rGO). The PD_PJ-α-MoO₃-rGO showed specific capacitance of 200 F g^-1 at 1A g^-1. The PEG diacid 600 improved ionic conductivity, and the addition of reduced graphene oxide in the nanocomposite (PD_PJA-α-MoO₃-rGO) enhanced electrical conductivity.

在这项研究中，合成了三种基于聚合物点和具有α和β相的氧化钼以及还原氧化石墨烯的纳米复合材料。研究了添加聚乙二醇二酸对提高聚合物点表面官能团的影响。聚乙二醇二酸不仅增加了聚合物点上的CO2H， CHO和NH2（以改善超级电容器的行为），而且还增加了从β到α的钼氧化物相。由于α相的形态呈片状，因此提高了超级电容器的性能。最后，将还原氧化石墨烯加入到纳米复合材料结构中，以提高其导电性。研究了纳米复合材料作为电极材料的超级电容器性能，并用优化后的纳米复合材料（PDPJ-α-MoO3-rGO）制作了对称器件。PDPJ-α-MoO3-rGO在1A g-1时的比电容为200 F -1。聚乙二醇二酸600提高了离子电导率，在纳米复合材料中加入还原氧化石墨烯（PDPJA-α-MoO3-rGO）增强了电导率。

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引用次数: 0

Cationization of fac-[Mn(CO)3(Rbpy)Br] complexes with ammonia: direct access to water-soluble photoinduced CO releasing molecules 面[Mn(CO)3(Rbpy)Br]配合物与氨的阳离子化：直接获得水溶性光诱导CO释放分子

IF 2.1 3区化学 Q3 CHEMISTRY, INORGANIC & NUCLEAR

Journal of Organometallic Chemistry

Pub Date : 2025-10-08 DOI: 10.1016/j.jorganchem.2025.123888

Marcel Annereau , Anne Le Mire , Geoffrey Gontard , Michèle Salmain , Vincent Corcé

A new family of water-soluble photoinduced CO-releasing molecules (PhotoCORMs) having the general structure fac-[Mn(CO)₃(^Rbpy)(NH₃)]Br (bpy= 2,2′-bipyridine; R= -H, -Me, -tBu, -OMe, -NO₂, -CF₃, -CONH₂) has been synthesized in good yield by reaction between the corresponding [Mn(CO)₃(^Rbpy)Br] complexes and methanolic ammonia. Photolysis experiments and myoglobin assay were performed on all the complexes and unambiguously demonstrated that they rapidly release from one to three CO molecules upon blue light irradiation.

通过相应的[Mn(CO)3(Rbpy)Br]配合物与甲醇氨反应，合成了一类新的水溶性光诱导CO释放分子（PhotoCORMs），其总体结构为-[Mn(CO)3(Rbpy)(NH3)]Br （bpy= 2,2 ' -联吡啶；R= - h, - me, - tbu, - ome, - no2, - cf3, - conh2）。对所有复合物进行光解实验和肌红蛋白测定，明确表明它们在蓝光照射下迅速从一到三个CO分子中释放出来。

引用次数: 0

The halogenation reaction of substituted triosmium clusters 取代三锇团簇的卤化反应

IF 2.1 3区化学 Q3 CHEMISTRY, INORGANIC & NUCLEAR

Journal of Organometallic Chemistry

Pub Date : 2025-10-08 DOI: 10.1016/j.jorganchem.2025.123891

Bo Li , Kar Hang Garvin Mak , Elumalai Kumaran , Pei Yu Lim , Jiaxuan Felicia Lin , Weng Kee Leong , Roland K. Pomeroy

Bromination of the monosubstituted clusters Os₃(CO)₁₁(L) (L = PR₃, 1) afforded a mixture of the trinuclear chain products Os(CO)₃(X)₂Os(CO)₄Os(CO)₄(L), 2, and Os(CO)₄(X)Os(CO)₄Os(CO)₃(L)(X), 3; the former comprising tandem donor-acceptor metal-metal bonds. Evidence is provided that the first observable species are 2 and an isomer of 3 in which the phosphine is in a radial position (3′) which, in most cases, isomerised to the axial isomer on warming. Bromination of the disubstituted isonitrile derivative Os₃(CO)₁₀(CN^tBu)₂, 7, also afforded two isomeric trinuclear chains, viz., Os(CO)₃(CN^tBu)(Br)Os(CO)₄Os(CO)₃(CN^tBu)(Br), 10c(Br), and the tandem donor-acceptor Os(CO)₃(CN^tBu)₂Os(CO)₄Os(CO)₃(Br)₂, 11; the reaction pathway appears to be similar to that for 1. In contrast, the reaction of halogens with the monosubstituted nitrile or isonitrile analogues, viz., Os₃(CO)₁₁(L) (L = nitrile or isonitrile, 6), afforded as the sole product the trinuclear chains Os(CO)₄(X)Os(CO)₄Os(CO)₃(L)(X), 8, for which the ligand L is in a radial position.

单取代簇Os3(CO)11(L) （L = PR3, 1）的溴化反应产生了三核链产物Os(CO)3(X) 2s (CO)4Os(CO)4(L)， 2和Os(CO)4(X)Os(CO)4Os(CO)3(L)(X)， 3的混合物；前者包括串联供体-受体金属-金属键。有证据表明，第一批可观察到的物种是2和3的异构体，其中磷化氢处于径向位置（3 '），在大多数情况下，在变暖时异构为轴向异构体。二取代的异腈衍生物Os3(CO)10(CNtBu) 2,7的溴化也产生了两个异构三核链，即Os(CO)3(CNtBu)(Br)Os(CO)4Os(CO)3(CNtBu)(Br), 10c（Br）和串列供体-受体Os(CO)3(CNtBu)2Os(CO)4Os(CO)3(Br) 2,11；反应途径似乎与1类似。相反，卤素与单取代的腈或异腈类似物，即Os3(CO)11(L) （L =腈或异腈，6）的反应，唯一的产物是三核链Os(CO)4(X)Os(CO)4Os(CO)3(L)(X), 8，其中配体L位于径向位置。

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引用次数: 0

Steric and electronic influence on the reactivity and hydrogenation catalytic activity of alkenes and alkynes using ruthenium pincer complexes 钌螯合物对烯烃和炔烃反应活性和加氢催化活性的位阻和电子影响

IF 2.1 3区化学 Q3 CHEMISTRY, INORGANIC & NUCLEAR

Journal of Organometallic Chemistry

Pub Date : 2025-10-08 DOI: 10.1016/j.jorganchem.2025.123890

Kamla D. Netam, Balaji R. Jagirdar

Fine tuning the electronic and steric properties of ligand is crucial for enhancing the catalytic efficiency of transition metal catalysts. This study investigates coordinatively unsaturated ruthenium complexes [RuH(CO)(P^PhN^iPrP^Ph)][BAr^F₄] (1) and [RuH(N₂/solv)(CO)(P^PhN^NpP^Ph)][BAr^F₄] (2), featuring isopropyl- and neopentyl-substituted PNP ligands, stabilized by agostic interactions or weakly bound N₂/solvent at the sixth coordination site. These complexes were evaluated for hydrogenation of olefin and alkyne under mild conditions, where complex 1 exhibited higher catalytic activity compared to complex 2. Furthermore, the reaction of both the complexes with ethylene at 298 K yielded cis-[RuH(C₂H₄)(CO)(P^PhN^RP^Ph)][BAr^F₄] complexes (R = iPr (1a); Np (2a)). The variable-temperature (VT) ¹H and ³¹P{¹H} NMR spectral studies of complex 1a revealed a rapid exchange between the bound and free ethylene at the vacant coordination site, whereas the complex 2a showed strong interaction between the metal and ethylene.

调整配体的电子和空间性质对提高过渡金属催化剂的催化效率至关重要。本研究研究了配位不饱和钌配合物[RuH(CO)(PPhNiPrPPh)][BArF4](1)和[RuH(N2/solv)(CO)(PPhNNpPPh)][BArF4](2)，这些配合物具有异丙基和新戊基取代的PNP配体，在第六配位位点被有机相互作用或弱结合的N2/溶剂稳定。这些配合物在温和条件下对烯烃和炔的加氢反应进行了评价，其中配合物1比配合物2表现出更高的催化活性。此外，这两种配合物在298 K下与乙烯反应生成顺式-[RuH(C2H4)(CO)(PPhNRPPh)][BArF4]配合物(R = iPr (1a)；Np(2))。配合物1a的变温（VT） 1H和31P{1H} NMR谱研究表明，在空位配位位点上，结合的乙烯和游离的乙烯之间进行了快速的交换，而配合物2a显示出金属与乙烯之间强烈的相互作用。

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引用次数: 0