Abstract The complexation of two transition metal ions with the β‐blocker drugs acebutolol (HL1), atenolol (HL2), and propranolol (HL3) was studied in methanol and acetonitrile media at M:L (metal:ligand) molar ratio from 1:1 to 1:10. Cu(II) complexes with ligands having the stoichiometric ratio 1:4 (mononuclear copper(II) complexes) and 1:1 (binuclear copper(II) complexes) were prepared. The analytical data show that the metal to ligand ratio in the mononuclear Co(II) complexes was 1:2. The complexes were characterized on the basis of analytical data, magnetic moments, atomic absorption, infrared and electronic spectral data. Molar conductivities of the complexes at room temperature were measured. The conductivity values of the mononuclear Cu(II) complexes indicate weak electrolyte behavior, whereas the binuclear Cu(II) and mononuclear Co(II) complexes are non‐electrolytes. The thermal properties of all complexes have been studied by the DTA and TG.
{"title":"Synthesis and Characterization of Metal Complexes of Acebutolol, Atenolol, and Propranolol Antihypertension Drugs","authors":"A. Gölcü, Cem Yücesoy, S. Serin","doi":"10.1081/SIM-120039270","DOIUrl":"https://doi.org/10.1081/SIM-120039270","url":null,"abstract":"Abstract The complexation of two transition metal ions with the β‐blocker drugs acebutolol (HL1), atenolol (HL2), and propranolol (HL3) was studied in methanol and acetonitrile media at M:L (metal:ligand) molar ratio from 1:1 to 1:10. Cu(II) complexes with ligands having the stoichiometric ratio 1:4 (mononuclear copper(II) complexes) and 1:1 (binuclear copper(II) complexes) were prepared. The analytical data show that the metal to ligand ratio in the mononuclear Co(II) complexes was 1:2. The complexes were characterized on the basis of analytical data, magnetic moments, atomic absorption, infrared and electronic spectral data. Molar conductivities of the complexes at room temperature were measured. The conductivity values of the mononuclear Cu(II) complexes indicate weak electrolyte behavior, whereas the binuclear Cu(II) and mononuclear Co(II) complexes are non‐electrolytes. The thermal properties of all complexes have been studied by the DTA and TG.","PeriodicalId":22160,"journal":{"name":"Synthesis and Reactivity in Inorganic and Metal-organic Chemistry","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2004-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"77414801","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Abstract Tetraaza acyclic Schiff bases, prepared from 1,2‐(diimino‐4′‐antipyrinyl)‐1,2‐diphenylethane and p‐substituted anilines, act as tetradentate ligands and form solid cationic solid complexes with Cu(II), Zn(II), and VO(IV) salts in ethanol. Microanalytical data, magnetic susceptibility measurements, IR, UV‐VIS, mass, 1H and 13C NMR, and ESR spectral techniques were used to characterize the structures of synthesized compounds. IR and UV‐VIS spectra of the complexes suggest that all the copper complexes exhibit square–planar geometry while the oxovanadium complexes are of square–pyramidal geometry. Mass, 1H and 13C NMR spectra of the Schiff bases and their complexes suggest that the general formula of the complexes is [ML]Y (where L = L1, L2 or L3, Y = Cl2 or SO4). Electrolytic behaviour of the chelates was assessed from their higher conductance data. Monomeric nature of the chelates was confirmed from their magnetic susceptibility values. Redox studies by cyclic voltammetry of copper complexes in MeCN suggest the existence of unusual oxidation states such as Cu(III), Cu(I), and Cu(0) which are stabilized by the ligand systems. The cyclic voltammogram of the oxovanadium complexes in MeCN shows two quasi‐reversible peak for the VO(IV)/VO(V) and VO(IV)/VO(III) couples. The X‐band ESR spectra of copper and oxovanadium complexes in DMSO solution at 300 and 77 K were recorded and their salient features are discussed.
{"title":"Synthesis, Spectral, and Cyclic Voltammetric Studies of Tetraaza Copper(II), Oxovanadium(IV), and Zinc(II) Complexes Derived from 1,2‐(Diimino‐4′‐antipyrinyl)‐1,2‐diphenylethane and para‐Substituted Anilines","authors":"N. Raman, A. Kulandaisamy, C. Thangaraja","doi":"10.1081/SIM-120039266","DOIUrl":"https://doi.org/10.1081/SIM-120039266","url":null,"abstract":"Abstract Tetraaza acyclic Schiff bases, prepared from 1,2‐(diimino‐4′‐antipyrinyl)‐1,2‐diphenylethane and p‐substituted anilines, act as tetradentate ligands and form solid cationic solid complexes with Cu(II), Zn(II), and VO(IV) salts in ethanol. Microanalytical data, magnetic susceptibility measurements, IR, UV‐VIS, mass, 1H and 13C NMR, and ESR spectral techniques were used to characterize the structures of synthesized compounds. IR and UV‐VIS spectra of the complexes suggest that all the copper complexes exhibit square–planar geometry while the oxovanadium complexes are of square–pyramidal geometry. Mass, 1H and 13C NMR spectra of the Schiff bases and their complexes suggest that the general formula of the complexes is [ML]Y (where L = L1, L2 or L3, Y = Cl2 or SO4). Electrolytic behaviour of the chelates was assessed from their higher conductance data. Monomeric nature of the chelates was confirmed from their magnetic susceptibility values. Redox studies by cyclic voltammetry of copper complexes in MeCN suggest the existence of unusual oxidation states such as Cu(III), Cu(I), and Cu(0) which are stabilized by the ligand systems. The cyclic voltammogram of the oxovanadium complexes in MeCN shows two quasi‐reversible peak for the VO(IV)/VO(V) and VO(IV)/VO(III) couples. The X‐band ESR spectra of copper and oxovanadium complexes in DMSO solution at 300 and 77 K were recorded and their salient features are discussed.","PeriodicalId":22160,"journal":{"name":"Synthesis and Reactivity in Inorganic and Metal-organic Chemistry","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2004-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"76503062","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Abstract Some mixed‐ligand complexes of the transition metal ions Mn(II), Co(II), Ni(II), Cu(II), Zn(II), and Cd(II) with the potassium salt of salicylideneglycine and 2,2′‐bipyridylamine or di(benzylidene)‐1,8‐diaminonaphthalene have been prepared. The coordination behavior of the mixed‐ligand complexes was characterized on the basis of elemental analyses, IR, and electronic spectra. The magnetic measurements have been obtained by a vibrating sample magnetometer. It is observed that the mixed‐ligand complexes of Mn(II), Co(II), Ni(II), Cu(II) are paramagnetic, while the Zn(II) and Cd(II) complexes are diamagnetic. All of these mixed‐ligand complexes are colored crystalline solids. Octahedral geometries have been assigned to all of the prepared mixed‐ligand complexes. The antibacterial activities of the ligands, the metal chlorides, the mixed‐ligand complexes, the standard drug (tetracycline), and control (dimethyl sulfoxide) were tested on the pathogenic bacteria S. typhi, E. coli, and Serratia marcescens using the “disc diffusion method,” and the results are discussed.
{"title":"Synthesis, Structural Characterization, and Antibacterial Studies of Some Mixed‐Ligand First Row d‐Transition Metal Complexes","authors":"P. K. Panchal, M. Patel","doi":"10.1081/SIM-120039271","DOIUrl":"https://doi.org/10.1081/SIM-120039271","url":null,"abstract":"Abstract Some mixed‐ligand complexes of the transition metal ions Mn(II), Co(II), Ni(II), Cu(II), Zn(II), and Cd(II) with the potassium salt of salicylideneglycine and 2,2′‐bipyridylamine or di(benzylidene)‐1,8‐diaminonaphthalene have been prepared. The coordination behavior of the mixed‐ligand complexes was characterized on the basis of elemental analyses, IR, and electronic spectra. The magnetic measurements have been obtained by a vibrating sample magnetometer. It is observed that the mixed‐ligand complexes of Mn(II), Co(II), Ni(II), Cu(II) are paramagnetic, while the Zn(II) and Cd(II) complexes are diamagnetic. All of these mixed‐ligand complexes are colored crystalline solids. Octahedral geometries have been assigned to all of the prepared mixed‐ligand complexes. The antibacterial activities of the ligands, the metal chlorides, the mixed‐ligand complexes, the standard drug (tetracycline), and control (dimethyl sulfoxide) were tested on the pathogenic bacteria S. typhi, E. coli, and Serratia marcescens using the “disc diffusion method,” and the results are discussed.","PeriodicalId":22160,"journal":{"name":"Synthesis and Reactivity in Inorganic and Metal-organic Chemistry","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2004-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"81943380","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Abstract The preparations are reported for a range of complexes of the ligand N,N′‐p‐phenylenedimethylenebis(pyridin‐4‐one) (XBP) with the d‐block ions Mn(II) to Zn(II) and also with Cd(II), Y(III), and the lanthanide ions. Relevant solid state EPR, electronic and far‐IR spectra are reported and interpreted in terms of the metal ion coordination geometries and, where appropriate, the likely long‐range polymeric structures of the compounds. The value of the zero‐field splitting (zfs) parameter, D = 0.069 cm−1, obtained from the S = 1 type EPR spectrum of the compound {[Cu2(XBP)3(NO3)2](NO3)2 · 2H2O} n is compared with those of other compounds involving discrete Cu · Cu dimer interaction. The results of luminescence measurements on the complexes of Sm(III), Eu(III), Tb(III), and Dy(III) are also given.
{"title":"Synthesis and Spectroscopic Studies of Metal Complexes of N,N′‐p‐Phenylenedimethylenebis(pyridin‐4‐one) with d‐ and f‐Block Metal Ions","authors":"D. Goodgame, Amanda M Menzer","doi":"10.1081/SIM-120039269","DOIUrl":"https://doi.org/10.1081/SIM-120039269","url":null,"abstract":"Abstract The preparations are reported for a range of complexes of the ligand N,N′‐p‐phenylenedimethylenebis(pyridin‐4‐one) (XBP) with the d‐block ions Mn(II) to Zn(II) and also with Cd(II), Y(III), and the lanthanide ions. Relevant solid state EPR, electronic and far‐IR spectra are reported and interpreted in terms of the metal ion coordination geometries and, where appropriate, the likely long‐range polymeric structures of the compounds. The value of the zero‐field splitting (zfs) parameter, D = 0.069 cm−1, obtained from the S = 1 type EPR spectrum of the compound {[Cu2(XBP)3(NO3)2](NO3)2 · 2H2O} n is compared with those of other compounds involving discrete Cu · Cu dimer interaction. The results of luminescence measurements on the complexes of Sm(III), Eu(III), Tb(III), and Dy(III) are also given.","PeriodicalId":22160,"journal":{"name":"Synthesis and Reactivity in Inorganic and Metal-organic Chemistry","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2004-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"81568916","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Abstract The synthesis and laser behavior of bis[4‐(2‐benzothiazole‐azo)‐(2‐(o‐hydroxyphenoxy)ethyl)] ether (BTHE) dye has been studied. Its complexation with alkali and alkaline earth metal ions is reported. The extent of complexations, i.e., percentage extraction, extraction constant, distribution ratio, and stability constant were determined and discussed. The liquid membrane transport of sodium and potassium ions with BTHE was also studied.
{"title":"Hydroxyphenoxyethyl Ether Dye: Synthesis, Complexation, and Alkali Metal Transport","authors":"B. Pandya, S. Menon, Y. Agrawal","doi":"10.1081/SIM-120039273","DOIUrl":"https://doi.org/10.1081/SIM-120039273","url":null,"abstract":"Abstract The synthesis and laser behavior of bis[4‐(2‐benzothiazole‐azo)‐(2‐(o‐hydroxyphenoxy)ethyl)] ether (BTHE) dye has been studied. Its complexation with alkali and alkaline earth metal ions is reported. The extent of complexations, i.e., percentage extraction, extraction constant, distribution ratio, and stability constant were determined and discussed. The liquid membrane transport of sodium and potassium ions with BTHE was also studied.","PeriodicalId":22160,"journal":{"name":"Synthesis and Reactivity in Inorganic and Metal-organic Chemistry","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2004-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"84485574","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Abstract The present investigation reports the synthesis, characterization, and antibacterial activities of some mixed‐ligand complexes of the type [ML(SB)H2O], where M = Mn(II), Co(II), Ni(II), Cu(II), Zn(II), and Cd(II), SB1 = bis(benzylidene)ethylenediamine (benen) or SB2 = bis(acetophenone)ethylenediamine (acphen) and KHL = potassium salt of salicylideneglycine (salgly). Their structures have been elucidated on the basis of elemental analyses, thermogravimetric analyses, magnetic measurements, reflectance spectra, and IR spectra. The results are in accord with an octahedral environment around the central metal ion. The mixed‐ligand complexes of Mn(II), Co(II), Ni(II), and Cu(II) are paramagnetic while the Zn(II) and Cd(II) complexes are diamagnetic. The mixed‐ligand complexes have been tested against bacteria and the results are compared with a standard drug (tetracycline) and control (dimethyl sulfoxide).
{"title":"Preparation and Thermal, Spectroscopic, and Antibacterial Studies of Some Mixed‐Ligand Complexes","authors":"P. K. Panchal, D. Patel, M. Patel","doi":"10.1081/SIM-120039268","DOIUrl":"https://doi.org/10.1081/SIM-120039268","url":null,"abstract":"Abstract The present investigation reports the synthesis, characterization, and antibacterial activities of some mixed‐ligand complexes of the type [ML(SB)H2O], where M = Mn(II), Co(II), Ni(II), Cu(II), Zn(II), and Cd(II), SB1 = bis(benzylidene)ethylenediamine (benen) or SB2 = bis(acetophenone)ethylenediamine (acphen) and KHL = potassium salt of salicylideneglycine (salgly). Their structures have been elucidated on the basis of elemental analyses, thermogravimetric analyses, magnetic measurements, reflectance spectra, and IR spectra. The results are in accord with an octahedral environment around the central metal ion. The mixed‐ligand complexes of Mn(II), Co(II), Ni(II), and Cu(II) are paramagnetic while the Zn(II) and Cd(II) complexes are diamagnetic. The mixed‐ligand complexes have been tested against bacteria and the results are compared with a standard drug (tetracycline) and control (dimethyl sulfoxide).","PeriodicalId":22160,"journal":{"name":"Synthesis and Reactivity in Inorganic and Metal-organic Chemistry","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2004-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"90606791","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Abstract Ten new μ‐oxamido‐bridged {[Cu(II)]2Ln(III)}‐type heterotrinuclear complexes described by the overall formula Cu2(Meoxpn)2Ln(NO3)3 (Ln = Y, La, Nd, Sm, Eu, Gd, Tb, Dy, Ho, Er), where Meoxpn denotes the N,N′‐bis(3‐amino‐2‐methylpropyl)oxamido dianion, have been synthesized and characterized by elemental analyses, molar conductivity measurements, and spectroscopic (IR, UV, and ESR) characterization. Magnetic susceptibility (4.2–300 K) studies of the Cu2(Meoxpn)2–Gd(NO3)3 complex have revealed that the central gadolinium(III) and terminal copper(II) ions are ferromagnetically coupled with the exchange integral J (Cu–Gd) = +3.85 cm−1, while an antiferromagnetic coupling is detected between the two terminal copper(II) ions with the exchange integral J′(Cu–Cu) = −0.98 cm−1, on the basis of the spin Hamiltonian operator [ Ĥ = −2J (Ŝ Cu1 Ŝ Gd + Ŝ Cu2 Ŝ Gd) − 2J′(Ŝ Cu1 Ŝ Cu2)].
{"title":"Synthesis and Magnetism of {[Cu(II)]2Ln(III)} Heterotrinuclear Complexes Bridged by N,N'‐bis(3‐Amino‐2‐methylpropyl)oxamidocopper(II)","authors":"Yan-Tuan Li, Cui‐Wei Yan, Chunyuan Zhu","doi":"10.1081/SIM-120037522","DOIUrl":"https://doi.org/10.1081/SIM-120037522","url":null,"abstract":"Abstract Ten new μ‐oxamido‐bridged {[Cu(II)]2Ln(III)}‐type heterotrinuclear complexes described by the overall formula Cu2(Meoxpn)2Ln(NO3)3 (Ln = Y, La, Nd, Sm, Eu, Gd, Tb, Dy, Ho, Er), where Meoxpn denotes the N,N′‐bis(3‐amino‐2‐methylpropyl)oxamido dianion, have been synthesized and characterized by elemental analyses, molar conductivity measurements, and spectroscopic (IR, UV, and ESR) characterization. Magnetic susceptibility (4.2–300 K) studies of the Cu2(Meoxpn)2–Gd(NO3)3 complex have revealed that the central gadolinium(III) and terminal copper(II) ions are ferromagnetically coupled with the exchange integral J (Cu–Gd) = +3.85 cm−1, while an antiferromagnetic coupling is detected between the two terminal copper(II) ions with the exchange integral J′(Cu–Cu) = −0.98 cm−1, on the basis of the spin Hamiltonian operator [ Ĥ = −2J (Ŝ Cu1 Ŝ Gd + Ŝ Cu2 Ŝ Gd) − 2J′(Ŝ Cu1 Ŝ Cu2)].","PeriodicalId":22160,"journal":{"name":"Synthesis and Reactivity in Inorganic and Metal-organic Chemistry","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2004-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"84799932","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
M. Shakir, Nishat Begum, S. Parveen, P. Chingsubam, S. Tabassum
Abstract The macrocyclic ligand, 1,2,6,9,13,14‐hexaaza‐3,5,10,12‐tetramethylcyclopentadecane‐2,5,9,12‐tetraene (L), has been prepared by the condensation reaction of hydrazine, formaldehyde, ethylenediamine, and 2,4‐pentanedione in 2:1:1:2 molar ratio. Metal complexes of the type [MLX2] (M = Co(II), Ni(II), Cu(II), and Zn(II); X = Cl or NO3) have been synthesized by the reaction of L with the corresponding metal salts in methanol. The macrocyclic ligand (L) and its metal complexes have been characterized by elemental analyses, FT‐IR and 1H and 13C NMR spectral studies. The stereochemistry of the metal complexes have been deduced from magnetic moments and band positions in the electronic spectra.
{"title":"Synthesis and Physico‐chemical Studies on a 15‐Membered Hexaaza Macrocyclic Ligand Derived from Hydrazine and Its Complexes with Co(II), Ni(II), Cu(II), and Zn(II)","authors":"M. Shakir, Nishat Begum, S. Parveen, P. Chingsubam, S. Tabassum","doi":"10.1081/SIM-120039262","DOIUrl":"https://doi.org/10.1081/SIM-120039262","url":null,"abstract":"Abstract The macrocyclic ligand, 1,2,6,9,13,14‐hexaaza‐3,5,10,12‐tetramethylcyclopentadecane‐2,5,9,12‐tetraene (L), has been prepared by the condensation reaction of hydrazine, formaldehyde, ethylenediamine, and 2,4‐pentanedione in 2:1:1:2 molar ratio. Metal complexes of the type [MLX2] (M = Co(II), Ni(II), Cu(II), and Zn(II); X = Cl or NO3) have been synthesized by the reaction of L with the corresponding metal salts in methanol. The macrocyclic ligand (L) and its metal complexes have been characterized by elemental analyses, FT‐IR and 1H and 13C NMR spectral studies. The stereochemistry of the metal complexes have been deduced from magnetic moments and band positions in the electronic spectra.","PeriodicalId":22160,"journal":{"name":"Synthesis and Reactivity in Inorganic and Metal-organic Chemistry","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2004-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"84751508","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Hui‐lu Wu, Wei Ying, L. Pen, Yici. Gao, Kai-bei Yu
Abstract Two complexes of zinc(II) and copper(II) with tris(2‐benzimidazolylmethyl)amine (ntb) and the anion of acrylic acid of the compositions [M(ntb)(acrylate)](acrylate) · 2.5H2O (M = Zn or Cu) were synthesized and characterized by means of elemental analyses, thermal analyses, IR and H1 NMR spectra. The crystal structure of the novel compound [Zn(ntb)(acrylate)](acrylate) · 1.63H2O has been determined by a single‐crystal x‐ray diffraction method and shows that each zinc ion is linked to tris(2‐benzimidazolylmethyl)amine (ntb) and an acrylate; but another acrylate is the anion of the complex. The zinc ion is five‐coordinate with a N4O ligand set. The coordination geometries of the zinc ion maybe best described as a distorted trigonal‐bipyramid of site symmetry C3.
{"title":"Synthesis, Crystal Structure, and Properties of Novel Five‐Coordinate Complexes of Zinc(II) and Copper(II) with tris(2‐Benzimidazolylmethyl)amine","authors":"Hui‐lu Wu, Wei Ying, L. Pen, Yici. Gao, Kai-bei Yu","doi":"10.1081/SIM-120037524","DOIUrl":"https://doi.org/10.1081/SIM-120037524","url":null,"abstract":"Abstract Two complexes of zinc(II) and copper(II) with tris(2‐benzimidazolylmethyl)amine (ntb) and the anion of acrylic acid of the compositions [M(ntb)(acrylate)](acrylate) · 2.5H2O (M = Zn or Cu) were synthesized and characterized by means of elemental analyses, thermal analyses, IR and H1 NMR spectra. The crystal structure of the novel compound [Zn(ntb)(acrylate)](acrylate) · 1.63H2O has been determined by a single‐crystal x‐ray diffraction method and shows that each zinc ion is linked to tris(2‐benzimidazolylmethyl)amine (ntb) and an acrylate; but another acrylate is the anion of the complex. The zinc ion is five‐coordinate with a N4O ligand set. The coordination geometries of the zinc ion maybe best described as a distorted trigonal‐bipyramid of site symmetry C3.","PeriodicalId":22160,"journal":{"name":"Synthesis and Reactivity in Inorganic and Metal-organic Chemistry","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2004-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"91487403","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Abstract Cu(II) complexes of new bidentate and tridentate Schiff bases derived from the condensation of 3‐hydrazino‐6‐methyl[1,2,4]triazin‐5(4H)one and aromatic aldehyde derivatives were synthesized and characterized. The structure of the complexes proposed according to elemental analyses, molar conductance, IR UV‐Visible absorption spectra is square‐planar. The thermodecomposition kinetics of the complexes were investigated under non‐isothermal condition. TG and DTG curves indicated that the complexes decompose in three to six steps. The photochemical behavior of the complexes depends on the substituted group on the aromatic aldehyde. A mechanism has been suggested to account for the recorded results.
{"title":"Synthesis, Characterization, and Photochemical Studies of Some Copper Complexes of Schiff Bases Derived from 3‐Hydrazino‐6‐methyl[1,2,4]triazin‐5(4H)one","authors":"A. Osman, M. Saleh, S. Mahmoud","doi":"10.1081/SIM-120039258","DOIUrl":"https://doi.org/10.1081/SIM-120039258","url":null,"abstract":"Abstract Cu(II) complexes of new bidentate and tridentate Schiff bases derived from the condensation of 3‐hydrazino‐6‐methyl[1,2,4]triazin‐5(4H)one and aromatic aldehyde derivatives were synthesized and characterized. The structure of the complexes proposed according to elemental analyses, molar conductance, IR UV‐Visible absorption spectra is square‐planar. The thermodecomposition kinetics of the complexes were investigated under non‐isothermal condition. TG and DTG curves indicated that the complexes decompose in three to six steps. The photochemical behavior of the complexes depends on the substituted group on the aromatic aldehyde. A mechanism has been suggested to account for the recorded results.","PeriodicalId":22160,"journal":{"name":"Synthesis and Reactivity in Inorganic and Metal-organic Chemistry","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2004-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"88312165","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
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