Three new binuclearcopper( ) complexesbridged by dithio- oxamidate(dto) group or biscyclohexanone oxalyldihydrazone (BCO) [Cu2 (en) 2 (dto) ](Cl O4) 2 .3H2 O (1)、[Cu2(dien) 2 (dto) ](Cl O4) 2 .2 H2 O (2 ) and [Cu2 (b...Three new binuclearcopper( ) complexesbridged by dithio- oxamidate(dto) group or biscyclohexanone oxalyldihydrazone (BCO) [Cu2 (en) 2 (dto) ](Cl O4) 2 .3H2 O (1)、[Cu2(dien) 2 (dto) ](Cl O4) 2 .2 H2 O (2 ) and [Cu2 (bipy) 2 (BCO) (Cl O4) 2 ](Cl O4) 2 (3) ,where en , bipy and dien denote ethylenediamine,2 ,2′- bipyridyl and diethylentriamine respectively, were synthesized and characterized by elemental analysis,IR,electronicspectra and variable temperature magnetic susceptibility. Variable temperature (4. 0 - 30 0 K ) magnetic susceptibility data for the complexes show that there exists the antiferromagnetic exchange interaction between the two copper( ) ionswith J(cm-1 ) valuesof- 0 .4 6 2 (1)、- 1.0 3 (2 ) and - 6 .86 (3) . The preliminary study of the electrochemical characteristicsof complex (3) was also carried out.展开更多
A new complex with binuclear nickel(Ⅱ) complex [Ni2(bbimp)(CH3CH2OH)2Cl2]Cl· 4H2O (bbimp=2,6 bis[bis(2 benzimidazolylmethyl)]aminomethyl 4 methylpheno)(o)had been synthesized and characterized by elementary anal...A new complex with binuclear nickel(Ⅱ) complex [Ni2(bbimp)(CH3CH2OH)2Cl2]Cl· 4H2O (bbimp=2,6 bis[bis(2 benzimidazolylmethyl)]aminomethyl 4 methylpheno)(o)had been synthesized and characterized by elementary analysis, IR and UV. The molecular structure of the title complex was determined by X ray single crystal diffraction method. The crystal is monoclinic, space group P21/n with a=20.803(2)? , b=30.708(3)? , c=20.959(2)? , β =105.776(2)° , Z=8, V=12885(2)? 3, Dx=1.132Mg· m- 3, μ =0.755mm- 1, F(000)=4592, R1=0.1267, S=1.376. It was showed that the nickel? cation is the central ion of a distorted octahedral coordination with two N belonging to benzimidazole, a bridging phenolate O, a N of tertiary amine, a Cl anion, and an O of an ethanol molecule. Two nickel? cations in a molecular structure had the same coordinated environment. CCDC: 197601.展开更多
A mononuclear Cobalt(Ⅱ) complex [CoL(H2O)2]n (H2L:4,4′,6,6′-Tetrabromo-2,2′-[ethylenedioxybis(nitrilomethylidyne)]diphenol), has been synthesized and structurally characterized by elemental analysis, IR and X-ray ...A mononuclear Cobalt(Ⅱ) complex [CoL(H2O)2]n (H2L:4,4′,6,6′-Tetrabromo-2,2′-[ethylenedioxybis(nitrilomethylidyne)]diphenol), has been synthesized and structurally characterized by elemental analysis, IR and X-ray diffraction single crystal structure analysis. The crystal of the complex belongs to monoclinic space group P21/c with a=2.516 8(3) nm, b=1.023 43(18) nm, c=0.789 17(14) nm, β=91.375(2)°, V=2.032 1(5) nm3, Z=4, Dc=2.317 Mg·m-3, μ(Mo Kα)=8.747 mm-1, F(000)=1 356, R1=0.049 7, wR2=0.110 4. The crystal structure of [CoL(H2O)2]n indicates that the complex consists of one cobalt(Ⅱ) atom, one L2-unit and two coordinated water molecules, and the coordination number of the cobalt(Ⅱ) atom is six. One-dimensional chain supramolecular structure is formed by intermolecular hydrogen bonds and π-π stacking of neighboring benzene rings. CCDC:652649.展开更多
Three binuclear Nickel(Ⅱ) complexes were synthesized, bridged with dithiooxalate, Ni2(Bpy)3(Dto)2(H2O)3 (1), Ni2(Phen)3(Dto)2(H2O)3 (2) and Ni2(Me2Bpy)3(Dto)2(H2O)2 (3) (Bpy=2,2′-Bipyridine, Phen=1,10-phenanthroline...Three binuclear Nickel(Ⅱ) complexes were synthesized, bridged with dithiooxalate, Ni2(Bpy)3(Dto)2(H2O)3 (1), Ni2(Phen)3(Dto)2(H2O)3 (2) and Ni2(Me2Bpy)3(Dto)2(H2O)2 (3) (Bpy=2,2′-Bipyridine, Phen=1,10-phenanthroline, Me2Bpy=4,4′-dimethyl-2,2′-bipyridine, Dto2-=Dithiooxalate), and characterized by elemental analyses, IR, UV-Visible spectra, conductance. The variable temperature magnetic susceptibilities for the complexes were measured in the range of temperature between 1.5 K and 298 K. Experimental data of magnetic susceptibility were successfully fit to theoretical value based on the spin Hamiltonian operator: H=-2JS1S2, S1=S2=1, giving the magnetic exchange parameters of 2J=-52.8 cm-1. This result indicates the presence of a strong antiferromagnetic spin exchange interaction between the Ni(Ⅱ) ions. The magnetic exchange parameters of the binuclear Nickel(Ⅱ) complexes bridged with dithiooxalate is larger than that of the binuclear Nickel(Ⅱ) complexes bridged with oxalate. Dithiooxalate is more effective to transfer antiferromagnetic spin exchange interaction between the Ni(Ⅱ) ions than oxalate.展开更多
文摘Three new binuclearcopper( ) complexesbridged by dithio- oxamidate(dto) group or biscyclohexanone oxalyldihydrazone (BCO) [Cu2 (en) 2 (dto) ](Cl O4) 2 .3H2 O (1)、[Cu2(dien) 2 (dto) ](Cl O4) 2 .2 H2 O (2 ) and [Cu2 (bipy) 2 (BCO) (Cl O4) 2 ](Cl O4) 2 (3) ,where en , bipy and dien denote ethylenediamine,2 ,2′- bipyridyl and diethylentriamine respectively, were synthesized and characterized by elemental analysis,IR,electronicspectra and variable temperature magnetic susceptibility. Variable temperature (4. 0 - 30 0 K ) magnetic susceptibility data for the complexes show that there exists the antiferromagnetic exchange interaction between the two copper( ) ionswith J(cm-1 ) valuesof- 0 .4 6 2 (1)、- 1.0 3 (2 ) and - 6 .86 (3) . The preliminary study of the electrochemical characteristicsof complex (3) was also carried out.
文摘A new complex with binuclear nickel(Ⅱ) complex [Ni2(bbimp)(CH3CH2OH)2Cl2]Cl· 4H2O (bbimp=2,6 bis[bis(2 benzimidazolylmethyl)]aminomethyl 4 methylpheno)(o)had been synthesized and characterized by elementary analysis, IR and UV. The molecular structure of the title complex was determined by X ray single crystal diffraction method. The crystal is monoclinic, space group P21/n with a=20.803(2)? , b=30.708(3)? , c=20.959(2)? , β =105.776(2)° , Z=8, V=12885(2)? 3, Dx=1.132Mg· m- 3, μ =0.755mm- 1, F(000)=4592, R1=0.1267, S=1.376. It was showed that the nickel? cation is the central ion of a distorted octahedral coordination with two N belonging to benzimidazole, a bridging phenolate O, a N of tertiary amine, a Cl anion, and an O of an ethanol molecule. Two nickel? cations in a molecular structure had the same coordinated environment. CCDC: 197601.
文摘A mononuclear Cobalt(Ⅱ) complex [CoL(H2O)2]n (H2L:4,4′,6,6′-Tetrabromo-2,2′-[ethylenedioxybis(nitrilomethylidyne)]diphenol), has been synthesized and structurally characterized by elemental analysis, IR and X-ray diffraction single crystal structure analysis. The crystal of the complex belongs to monoclinic space group P21/c with a=2.516 8(3) nm, b=1.023 43(18) nm, c=0.789 17(14) nm, β=91.375(2)°, V=2.032 1(5) nm3, Z=4, Dc=2.317 Mg·m-3, μ(Mo Kα)=8.747 mm-1, F(000)=1 356, R1=0.049 7, wR2=0.110 4. The crystal structure of [CoL(H2O)2]n indicates that the complex consists of one cobalt(Ⅱ) atom, one L2-unit and two coordinated water molecules, and the coordination number of the cobalt(Ⅱ) atom is six. One-dimensional chain supramolecular structure is formed by intermolecular hydrogen bonds and π-π stacking of neighboring benzene rings. CCDC:652649.
文摘Three binuclear Nickel(Ⅱ) complexes were synthesized, bridged with dithiooxalate, Ni2(Bpy)3(Dto)2(H2O)3 (1), Ni2(Phen)3(Dto)2(H2O)3 (2) and Ni2(Me2Bpy)3(Dto)2(H2O)2 (3) (Bpy=2,2′-Bipyridine, Phen=1,10-phenanthroline, Me2Bpy=4,4′-dimethyl-2,2′-bipyridine, Dto2-=Dithiooxalate), and characterized by elemental analyses, IR, UV-Visible spectra, conductance. The variable temperature magnetic susceptibilities for the complexes were measured in the range of temperature between 1.5 K and 298 K. Experimental data of magnetic susceptibility were successfully fit to theoretical value based on the spin Hamiltonian operator: H=-2JS1S2, S1=S2=1, giving the magnetic exchange parameters of 2J=-52.8 cm-1. This result indicates the presence of a strong antiferromagnetic spin exchange interaction between the Ni(Ⅱ) ions. The magnetic exchange parameters of the binuclear Nickel(Ⅱ) complexes bridged with dithiooxalate is larger than that of the binuclear Nickel(Ⅱ) complexes bridged with oxalate. Dithiooxalate is more effective to transfer antiferromagnetic spin exchange interaction between the Ni(Ⅱ) ions than oxalate.
