The title compound was synthesized by the reaction of cis-[Co(phen)2Cl2]Cl·3H2O with DL-alanine at pH = 8, and isolated using a column chromatographic method. Its crystal structure was determined. The crystal str...The title compound was synthesized by the reaction of cis-[Co(phen)2Cl2]Cl·3H2O with DL-alanine at pH = 8, and isolated using a column chromatographic method. Its crystal structure was determined. The crystal structure belongs to mono-clinic system, space group P21/c, with a = 0. 9549(6) nm, b=2.3746(8) nm, c= 1.0782(4) nm, β=114.13(3)°? Z = 4, Dc= 1. 50 g/cm3. The final refinement converged to R = 0. 047 for 3246 independent observed reflections. In the octahedral coordination sphere formed by the cobalt atom and the coordinate atoms, N, O of DL-alan-inato ligands are in the configuration of trans-N ,N form.展开更多
The title compound,{Co[(C 2H 5) 2NCS 2] 3},has been prepared and its structure is determined by X ray diffraction with crystallographic data as follows:C 15 H 30 N 3S 6Co,Mr=503.7,monoclinic,space group C 2/c,a=14.105...The title compound,{Co[(C 2H 5) 2NCS 2] 3},has been prepared and its structure is determined by X ray diffraction with crystallographic data as follows:C 15 H 30 N 3S 6Co,Mr=503.7,monoclinic,space group C 2/c,a=14.105(2),b=10.299(3),c=17.059(3)?,β=110.15(1)°,V=2326.5? 3,Z=4,D c=1.466g/cm 3,μ=7.77cm -1 ,F(000)=1056,R=0.033,R W=0.04.展开更多
A new compound [CoⅢ(aea)(2,2′-bipy)]Cl·H2O (aea=N-(2-aminoethyl)asp artate, 2,2′-bipy=2,2′-bipyridine) was hydrothermally synthesized and structur ally characterized, which contains a new quadridentate ligand...A new compound [CoⅢ(aea)(2,2′-bipy)]Cl·H2O (aea=N-(2-aminoethyl)asp artate, 2,2′-bipy=2,2′-bipyridine) was hydrothermally synthesized and structur ally characterized, which contains a new quadridentate ligand (aea) came from ma lic acid and ethylenediamine via in-situ reaction. The asymmetric molecules are interconnected through N-H...O hydrogen bond to form helical chains that are fur ther hold together into a two-dimensional network via the N-H...Cl hydrogen bond . The formation of aea can be considered as the substitution of hydroxyl group i n malate by ethylenediamino group, which presents a type of new in-situ ligand r eaction. CCDC: 222018.展开更多
Mononuclear copper（Ⅱ）, nickel（Ⅱ） and cobalt（Ⅲ） tetracoordinate macrocyclic complexes were synthesized and spectroscopically characterized. The crystal structure of the three compounds were determined by X-ray...Mononuclear copper（Ⅱ）, nickel（Ⅱ） and cobalt（Ⅲ） tetracoordinate macrocyclic complexes were synthesized and spectroscopically characterized. The crystal structure of the three compounds were determined by X-ray crystallography. The electrochemical experimental results indicate that the three complexes could interact with DNA mainly by electrostatic interaction. The interaction of tetracoordinate macrocyclic cobalt（Ⅲ） complex with DNA was studied by cyclic voltammetry and UV-vis spectroscopy. The experimental results reveal that tetracoordinate macrocyc- lic cobalt（Ⅲ） complex could interact with DNA by electrostatic interaction to form a 1 ： 1 DNA association complex with a binding constant of 7.50 ×10^3 L·mol^-1.展开更多
基金Supported by the National Natural Science Foundation of China, Doctoral Program Foundation of Institution of High Education Research Foundation of State Key Laboratory of Coordination Chemistry, Nanjing University
文摘The title compound was synthesized by the reaction of cis-[Co(phen)2Cl2]Cl·3H2O with DL-alanine at pH = 8, and isolated using a column chromatographic method. Its crystal structure was determined. The crystal structure belongs to mono-clinic system, space group P21/c, with a = 0. 9549(6) nm, b=2.3746(8) nm, c= 1.0782(4) nm, β=114.13(3)°? Z = 4, Dc= 1. 50 g/cm3. The final refinement converged to R = 0. 047 for 3246 independent observed reflections. In the octahedral coordination sphere formed by the cobalt atom and the coordinate atoms, N, O of DL-alan-inato ligands are in the configuration of trans-N ,N form.
文摘The title compound,{Co[(C 2H 5) 2NCS 2] 3},has been prepared and its structure is determined by X ray diffraction with crystallographic data as follows:C 15 H 30 N 3S 6Co,Mr=503.7,monoclinic,space group C 2/c,a=14.105(2),b=10.299(3),c=17.059(3)?,β=110.15(1)°,V=2326.5? 3,Z=4,D c=1.466g/cm 3,μ=7.77cm -1 ,F(000)=1056,R=0.033,R W=0.04.
文摘A new compound [CoⅢ(aea)(2,2′-bipy)]Cl·H2O (aea=N-(2-aminoethyl)asp artate, 2,2′-bipy=2,2′-bipyridine) was hydrothermally synthesized and structur ally characterized, which contains a new quadridentate ligand (aea) came from ma lic acid and ethylenediamine via in-situ reaction. The asymmetric molecules are interconnected through N-H...O hydrogen bond to form helical chains that are fur ther hold together into a two-dimensional network via the N-H...Cl hydrogen bond . The formation of aea can be considered as the substitution of hydroxyl group i n malate by ethylenediamino group, which presents a type of new in-situ ligand r eaction. CCDC: 222018.
基金Project supported by the Program for New Century Excellent Talents in University （No. NCET-04-0649） and Science Foundation of China （Nos 20275020 and 20475030）.
文摘Mononuclear copper（Ⅱ）, nickel（Ⅱ） and cobalt（Ⅲ） tetracoordinate macrocyclic complexes were synthesized and spectroscopically characterized. The crystal structure of the three compounds were determined by X-ray crystallography. The electrochemical experimental results indicate that the three complexes could interact with DNA mainly by electrostatic interaction. The interaction of tetracoordinate macrocyclic cobalt（Ⅲ） complex with DNA was studied by cyclic voltammetry and UV-vis spectroscopy. The experimental results reveal that tetracoordinate macrocyc- lic cobalt（Ⅲ） complex could interact with DNA by electrostatic interaction to form a 1 ： 1 DNA association complex with a binding constant of 7.50 ×10^3 L·mol^-1.
