摘要
Two new Schiff base complexes of nickle（Ⅱ） [C18H20NiN2O4]·1.5H2O（1） and [C18H20N2NiO4]·H2O（2） were synthesized and characterized by elemental analysis,IR,UV-Vis and X-ray crystal structure analysis.Both 1 and 2 crystallize in the orthorhombic system.Crystal 1：space group Pbcn with a = 12.8591（19）,b = 14.779（2）,c = 19.749（3） ,V = 3753.3（10） 3,C18H23N2NiO5.5,Mr = 414.07,Z = 8,Dc = 1.445 g/cm3,μ = 1.067 mm-1,F（000） = 1712,S = 1.037,the final R = 0.0741 and wR = 0.2101 for 4353 observed reflections（I 〉 2σ（I）） and R = 0.1157 and wR = 0.2380 for all data.Crystal 2：space group P21 with a = 9.4673（17）,b = 11.559（2）,c = 16.347（3） ,V = 1788.9（6） 3,C18H22N2NiO5,Mr = 405.07,Z = 4,Dc = 1.497 g/cm3,μ = 1.116 mm-1,F（000） = 840,S = 1.085,the final R = 0.0330 and wR = 0.0869 for 3151 observed reflections（I 〉 2σ（I）） and R = 0.0362 and wR = 0.0887 for all data.Each Ni atom of 1 and 2 is six-coordinated with two nitrogen atoms and four oxygen atoms from two salicylidene-2-ethanolamine ligands yielding a distorted octahedral geometry.Dimer structure is observed in the packing diagram of 1.The thermal stability of complex 2 is also studied.
Two new Schiff base complexes of nickle（Ⅱ） [C18H20NiN2O4]·1.5H2O（1） and [C18H20N2NiO4]·H2O（2） were synthesized and characterized by elemental analysis,IR,UV-Vis and X-ray crystal structure analysis.Both 1 and 2 crystallize in the orthorhombic system.Crystal 1：space group Pbcn with a = 12.8591（19）,b = 14.779（2）,c = 19.749（3） ,V = 3753.3（10） 3,C18H23N2NiO5.5,Mr = 414.07,Z = 8,Dc = 1.445 g/cm3,μ = 1.067 mm-1,F（000） = 1712,S = 1.037,the final R = 0.0741 and wR = 0.2101 for 4353 observed reflections（I 〉 2σ（I）） and R = 0.1157 and wR = 0.2380 for all data.Crystal 2：space group P21 with a = 9.4673（17）,b = 11.559（2）,c = 16.347（3） ,V = 1788.9（6） 3,C18H22N2NiO5,Mr = 405.07,Z = 4,Dc = 1.497 g/cm3,μ = 1.116 mm-1,F（000） = 840,S = 1.085,the final R = 0.0330 and wR = 0.0869 for 3151 observed reflections（I 〉 2σ（I）） and R = 0.0362 and wR = 0.0887 for all data.Each Ni atom of 1 and 2 is six-coordinated with two nitrogen atoms and four oxygen atoms from two salicylidene-2-ethanolamine ligands yielding a distorted octahedral geometry.Dimer structure is observed in the packing diagram of 1.The thermal stability of complex 2 is also studied.
基金
supported by the Foundation of Henan Science & Technology Department (Nos. 092102210194 and 092102210216)
the Foundation of Nangyang Normal University (Nytc2004k03)
