The reaction of Ni（CH3COO）2.6H2O, 4-hydroxycinnamic acid （Hhca） and 4,4＇-bipyridine （bipy） ligand in water-solution afforded a mononuclear complex [Ni（H2O）4（4,4＇-bipy）2]（hca）2 which was characterized by ...The reaction of Ni（CH3COO）2.6H2O, 4-hydroxycinnamic acid （Hhca） and 4,4＇-bipyridine （bipy） ligand in water-solution afforded a mononuclear complex [Ni（H2O）4（4,4＇-bipy）2]（hca）2 which was characterized by IR, elemental analysis, TGA and single-crystal X-ray diffraction. X-ray crystallography analysis reveals that the complex is of triclinic, space group PI with a = 7.0238（14）, b = 7.2934（11）, c = 17.186（4） A, α = 87.073（13）, β = 84.354（10）, γ = 81.961（12）°, V= 866.9（3） A^3, Z = 1, Dc = 1.474 g/cm^3, F（000） = 402,μ = 62.7 mm^-1, R = 0.0411, wR = 0.0862 and GOF = 1.048. In solid state, the cation [Ni（H2O）4（4,4＇-bpy）2]^2＋ connects six nearby hca counter anions via O-H…O hydrogen bonds to form an extended 2D lattice framework and the O-…N hydrogen bonds finally link the 2D layers into an infinite 3D network.展开更多
One novel entangled cobalt compound, {[Co3（nbta）2（4,4＇-bpy）2（H2O）2]（H2O）2}n （1, H3nbta = 5-nitro-1,2,3-benzenetricarboxylic acid, 4,4＇-bpy = 4,4＇-bipyridyl）, was prepared and characterized by X-my diffrac...One novel entangled cobalt compound, {[Co3（nbta）2（4,4＇-bpy）2（H2O）2]（H2O）2}n （1, H3nbta = 5-nitro-1,2,3-benzenetricarboxylic acid, 4,4＇-bpy = 4,4＇-bipyridyl）, was prepared and characterized by X-my diffraction, magnetism, elemental analysis, XPS, TGA and IR spectroscopy. The crystal of 1 crystallizes in monoclinic, space group Pc with a = 13.0717（16）, b = 11.4167（14）, c = 15.9342（19） A, β = 90.5190（10）°, V= 2377.9（5） A3, Z= 2, C48H36Co3N8O20, Mr = 1221.64, Dc = 1.706 g/cm3, F（000） = 1242 and μ（MoKa） = 1.128 mm^-1. The final R = 0.0497 and wR = 0.1461 for 4185 observed reflections with I 〉 20（0 and R = 0.0721 and wR = 0.1619 for all data. X-ray diffraction analyses revealed that Co（l） is linked by the nbta3- ligands to form the ladder shape along the c axis, which is further extended into two-dimensional networks via the joint of Co（2） along the a axis. Moreover, these two dimensional motifs are interconnected by the 4,4＇-bpy bridges to form a complicated 3-D polymeric framework. Magnetic measurements revealed that compound 1 shows strong antiferromagnetic property.展开更多
基金Supported by the National Natural Science Foundation of China (20571054 and 20476066), the NSF of Jiangsu Province (BK2005031) and Project of High Technology of Jiangsu Province (BG2005021)
文摘The reaction of Ni（CH3COO）2.6H2O, 4-hydroxycinnamic acid （Hhca） and 4,4＇-bipyridine （bipy） ligand in water-solution afforded a mononuclear complex [Ni（H2O）4（4,4＇-bipy）2]（hca）2 which was characterized by IR, elemental analysis, TGA and single-crystal X-ray diffraction. X-ray crystallography analysis reveals that the complex is of triclinic, space group PI with a = 7.0238（14）, b = 7.2934（11）, c = 17.186（4） A, α = 87.073（13）, β = 84.354（10）, γ = 81.961（12）°, V= 866.9（3） A^3, Z = 1, Dc = 1.474 g/cm^3, F（000） = 402,μ = 62.7 mm^-1, R = 0.0411, wR = 0.0862 and GOF = 1.048. In solid state, the cation [Ni（H2O）4（4,4＇-bpy）2]^2＋ connects six nearby hca counter anions via O-H…O hydrogen bonds to form an extended 2D lattice framework and the O-…N hydrogen bonds finally link the 2D layers into an infinite 3D network.
基金supported by the National Natural Science Foundation of China (20873163)the Natural Science Foundation of Shandong Province (BR2010BQ023)+1 种基金Shandong Provincial Education Department (J09LB55)Qilu Normal University
文摘One novel entangled cobalt compound, {[Co3（nbta）2（4,4＇-bpy）2（H2O）2]（H2O）2}n （1, H3nbta = 5-nitro-1,2,3-benzenetricarboxylic acid, 4,4＇-bpy = 4,4＇-bipyridyl）, was prepared and characterized by X-my diffraction, magnetism, elemental analysis, XPS, TGA and IR spectroscopy. The crystal of 1 crystallizes in monoclinic, space group Pc with a = 13.0717（16）, b = 11.4167（14）, c = 15.9342（19） A, β = 90.5190（10）°, V= 2377.9（5） A3, Z= 2, C48H36Co3N8O20, Mr = 1221.64, Dc = 1.706 g/cm3, F（000） = 1242 and μ（MoKa） = 1.128 mm^-1. The final R = 0.0497 and wR = 0.1461 for 4185 observed reflections with I 〉 20（0 and R = 0.0721 and wR = 0.1619 for all data. X-ray diffraction analyses revealed that Co（l） is linked by the nbta3- ligands to form the ladder shape along the c axis, which is further extended into two-dimensional networks via the joint of Co（2） along the a axis. Moreover, these two dimensional motifs are interconnected by the 4,4＇-bpy bridges to form a complicated 3-D polymeric framework. Magnetic measurements revealed that compound 1 shows strong antiferromagnetic property.
