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
A practical and cheap method for synthesis of C-4 carboxylic acid substituted kainic acid analogue 5 and its epimer 6 from trans-4-hydroxyproline is described. Using this method, more interesting intermediates and ana...A practical and cheap method for synthesis of C-4 carboxylic acid substituted kainic acid analogue 5 and its epimer 6 from trans-4-hydroxyproline is described. Using this method, more interesting intermediates and analogues could be obtained easily.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.
文摘A practical and cheap method for synthesis of C-4 carboxylic acid substituted kainic acid analogue 5 and its epimer 6 from trans-4-hydroxyproline is described. Using this method, more interesting intermediates and analogues could be obtained easily.
