The crystal structure of [CoCl(C_7H_5N_2CH_2COPh)_4]Br has been determined by means of X-ray crystallography. The molecular structure consists of a discrete [CoCl(C_7H_5N_2CH_2COPh)_4]+ cation and one Br- anion. In th...The crystal structure of [CoCl(C_7H_5N_2CH_2COPh)_4]Br has been determined by means of X-ray crystallography. The molecular structure consists of a discrete [CoCl(C_7H_5N_2CH_2COPh)_4]+ cation and one Br- anion. In the [CoCl(C_7H_5N_2CH_2COPh)_4]+ cation, the coordination geometry of the central Co atom is square-pyramidal with four tertiary N atoms of benzimidazole from four α-(benzimidazol-1-yl)-hypnone ligands in the basal position and one chloride anion in the apical position. In the solid state, [CoCl(C_7H_5N_2CH_2COPh)_4]+ and Br- anion possess intermolecular and intramolecular interactions, which stabilize the crystal structure. The characterization of the title compound were also carried out by using elemeutal analysis, FTIR, UV spectrometries and TG-DSC.展开更多
A novel hybrid compound [Co（4,4′-bipy）2（H2O）4]（4,4′- H2bipy）2[H2W12O40]5.5H2O has been synthesized from an acidified aqueous solution and characterized by elemental and thermal analyses, IR and UV spectroscopy...A novel hybrid compound [Co（4,4′-bipy）2（H2O）4]（4,4′- H2bipy）2[H2W12O40]5.5H2O has been synthesized from an acidified aqueous solution and characterized by elemental and thermal analyses, IR and UV spectroscopy, and single-crystal X-ray structure determination. Structure analysis indicates that the title compound is of monoclinic, space group C2/c, with a = 21.315（9）, b = 15.303 （7）, c = 24.139（10）/k, β = 105.170（5）°, V= 7599（6）/k3, Mr= 3706.99, Z= 4, F（000） = 6616, Dc = 3.231, μ = 18.395 mm^-1, R = 0.0652 and wR = 0.1594. X-ray crystallographic study shows that the title compound consists of one [Co（4,4′-bipy）2（H2O）4]^2＋ cation, two diprotonated 4,4′-bipyridine molecules, 5.5 water molecules of crystallization, and one metatungstate polyoxoanion [H2W12O40]^6-, which approaches an effective Td point symmetry. TG-DTA analysis indicates that the framework of the metatungstate polyoxoanion is collapsed at 587.0℃.展开更多
Layered hydroxide metal acetate Co2（OH）3（CH3COO）·H2O with an interlayer spacing of 1.282 nm has been synthesized by a novel method which is employed in ethanol-aqueous mixed solvents media. Experiment results...Layered hydroxide metal acetate Co2（OH）3（CH3COO）·H2O with an interlayer spacing of 1.282 nm has been synthesized by a novel method which is employed in ethanol-aqueous mixed solvents media. Experiment results show that the purity of the product by the modified method is higher compared with that by the previous methods. A complete characterization of the as-prepared samples was performed by means of X-ray powder diffraction, IR spectroscopy, scanning electron microscope, as well as magnetic measurement. The facile and effective approach for the preparation of this compound in this study is very interesting and important because it has wide application in the field of anionic exchange reaction for the synthesis of hybrid organic-inorganic compounds.展开更多
Cobait（Ⅱ） nitrate reacted with 1,10-phenanthroline （phen） and 5-sulfosaiicylic acid （H3ssal） to yield the cobait（Ⅰ） complex [Co（phen）2（H2O）2]（Hssal）o4H2O （1） and the reaction of 1 with copper acetate...Cobait（Ⅱ） nitrate reacted with 1,10-phenanthroline （phen） and 5-sulfosaiicylic acid （H3ssal） to yield the cobait（Ⅰ） complex [Co（phen）2（H2O）2]（Hssal）o4H2O （1） and the reaction of 1 with copper acetate led to a novel complex [Co（phen）（H2O）4][Cu2（ssal）2（phen）2]·5H2O （2）. These two complexes were cationanion species and the cationic motif [Co（phen）2（H2O）2]^2＋of 1 could be converted to [Co（phen）（H2O）4]^2＋ in the formation process of new anion [Cu2（phen）2（ssal）2]^2- of 2. In both complexes abundant hydrogen bonds construct different supramolecular architectures, thus the conversion reaction can provide a new path to create novel supramolecular network.展开更多
The crystal structure of the title complex { [ Co (TCB)2/2-(IMI)2(H2O)2][Co(IMI)4(H2O)2]}[(H2O)4 (where TCB = 1,2,4,5-benzenetetracarboxylic anion; IMI= imidazole) has been determined by X-ray diffraction method. Crys...The crystal structure of the title complex { [ Co (TCB)2/2-(IMI)2(H2O)2][Co(IMI)4(H2O)2]}[(H2O)4 (where TCB = 1,2,4,5-benzenetetracarboxylic anion; IMI= imidazole) has been determined by X-ray diffraction method. Crystal data for {[Co(TCB)2/2(IMI)2(H2O)2][Co(IMI)4(H2O)2]}-(H2O)4: triclinic, space group P 1, a = 1.0647(2) nm, b =1.1165(1) nm, c = 1.00361(1) nm, α = 91.56(1)°, β = 111.34(1)°, γ= 115.642(10)°, V = 0.9772(3) nm3, Z = l. The polymer cobalt(II) complex has a novel three-dimension network structure. Co(1) atom and Co(2) atom both are coordinated in an octahedral arrangement and located in the center of the coordination anion and the center of the coordination cation, respectively. Moreover four carboxyl groups of TCB are divided into two types, two para-carboxyl groups bridge Co (1) atom in monodentate fashion and other two para-carboxyl groups are in free.展开更多
文摘The crystal structure of [CoCl(C_7H_5N_2CH_2COPh)_4]Br has been determined by means of X-ray crystallography. The molecular structure consists of a discrete [CoCl(C_7H_5N_2CH_2COPh)_4]+ cation and one Br- anion. In the [CoCl(C_7H_5N_2CH_2COPh)_4]+ cation, the coordination geometry of the central Co atom is square-pyramidal with four tertiary N atoms of benzimidazole from four α-(benzimidazol-1-yl)-hypnone ligands in the basal position and one chloride anion in the apical position. In the solid state, [CoCl(C_7H_5N_2CH_2COPh)_4]+ and Br- anion possess intermolecular and intramolecular interactions, which stabilize the crystal structure. The characterization of the title compound were also carried out by using elemeutal analysis, FTIR, UV spectrometries and TG-DSC.
基金the Program for New Century Excellent Talent in University of Henan Provincethe Foundation of Educational Department of Henan Province+1 种基金the Natural Science Foundation of Henan Provincethe Natural Science Foundation of Henan University
文摘A novel hybrid compound [Co（4,4′-bipy）2（H2O）4]（4,4′- H2bipy）2[H2W12O40]5.5H2O has been synthesized from an acidified aqueous solution and characterized by elemental and thermal analyses, IR and UV spectroscopy, and single-crystal X-ray structure determination. Structure analysis indicates that the title compound is of monoclinic, space group C2/c, with a = 21.315（9）, b = 15.303 （7）, c = 24.139（10）/k, β = 105.170（5）°, V= 7599（6）/k3, Mr= 3706.99, Z= 4, F（000） = 6616, Dc = 3.231, μ = 18.395 mm^-1, R = 0.0652 and wR = 0.1594. X-ray crystallographic study shows that the title compound consists of one [Co（4,4′-bipy）2（H2O）4]^2＋ cation, two diprotonated 4,4′-bipyridine molecules, 5.5 water molecules of crystallization, and one metatungstate polyoxoanion [H2W12O40]^6-, which approaches an effective Td point symmetry. TG-DTA analysis indicates that the framework of the metatungstate polyoxoanion is collapsed at 587.0℃.
基金Supported by the President Fund of Xi'an Technological University,China(No.XAGDXJJ1009)
文摘Layered hydroxide metal acetate Co2（OH）3（CH3COO）·H2O with an interlayer spacing of 1.282 nm has been synthesized by a novel method which is employed in ethanol-aqueous mixed solvents media. Experiment results show that the purity of the product by the modified method is higher compared with that by the previous methods. A complete characterization of the as-prepared samples was performed by means of X-ray powder diffraction, IR spectroscopy, scanning electron microscope, as well as magnetic measurement. The facile and effective approach for the preparation of this compound in this study is very interesting and important because it has wide application in the field of anionic exchange reaction for the synthesis of hybrid organic-inorganic compounds.
基金Project supported by the National Natural Science Foundation of China （No. 50073019）.
文摘Cobait（Ⅱ） nitrate reacted with 1,10-phenanthroline （phen） and 5-sulfosaiicylic acid （H3ssal） to yield the cobait（Ⅰ） complex [Co（phen）2（H2O）2]（Hssal）o4H2O （1） and the reaction of 1 with copper acetate led to a novel complex [Co（phen）（H2O）4][Cu2（ssal）2（phen）2]·5H2O （2）. These two complexes were cationanion species and the cationic motif [Co（phen）2（H2O）2]^2＋of 1 could be converted to [Co（phen）（H2O）4]^2＋ in the formation process of new anion [Cu2（phen）2（ssal）2]^2- of 2. In both complexes abundant hydrogen bonds construct different supramolecular architectures, thus the conversion reaction can provide a new path to create novel supramolecular network.
基金Project (No. 19990525) supported by the Education Commision of Zhejiang Province.
文摘The crystal structure of the title complex { [ Co (TCB)2/2-(IMI)2(H2O)2][Co(IMI)4(H2O)2]}[(H2O)4 (where TCB = 1,2,4,5-benzenetetracarboxylic anion; IMI= imidazole) has been determined by X-ray diffraction method. Crystal data for {[Co(TCB)2/2(IMI)2(H2O)2][Co(IMI)4(H2O)2]}-(H2O)4: triclinic, space group P 1, a = 1.0647(2) nm, b =1.1165(1) nm, c = 1.00361(1) nm, α = 91.56(1)°, β = 111.34(1)°, γ= 115.642(10)°, V = 0.9772(3) nm3, Z = l. The polymer cobalt(II) complex has a novel three-dimension network structure. Co(1) atom and Co(2) atom both are coordinated in an octahedral arrangement and located in the center of the coordination anion and the center of the coordination cation, respectively. Moreover four carboxyl groups of TCB are divided into two types, two para-carboxyl groups bridge Co (1) atom in monodentate fashion and other two para-carboxyl groups are in free.
