摘要
A new mononuclear cobalt（Ⅲ） complex [Co（dpa）2（Gly）]（ClO4）2-4H2O was synthesized by the reaction of Co^2＋, glycine （gly） and 2,2＂-dipyridylamine （dpa） in a methanol-water solution, and its structure was characterized by IR, EA, ES-MS and X-ray structure analysis. The compound crystallizes in the monoclinic system, space group P21/n with a = 12.8795（2）, b = 13.2904（2）, c = 19.1104（2）A, β= 109.378（1）°, V = 3085.89（8）A^3, Z = 4, Mr = 746.36, Dc = 1.606 g/cm^3, μ= 0.808 mm^-1, F（000） = 1536, the final R = 0.0543 and wR = 0.1306 for 5393 independent reflections. The magnetic measurement of the compound at room temperature shows that it is diamagnetic and the cobalt ion is in low spin ＋3 oxidation state. ES-MS experiments show that the [Co（dpa）E（Gly）]^2＋ cation is very stable in the methanol solution.
A new mononuclear cobalt（Ⅲ） complex [Co（dpa）2（Gly）]（ClO4）2-4H2O was synthesized by the reaction of Co^2＋, glycine （gly） and 2,2＂-dipyridylamine （dpa） in a methanol-water solution, and its structure was characterized by IR, EA, ES-MS and X-ray structure analysis. The compound crystallizes in the monoclinic system, space group P21/n with a = 12.8795（2）, b = 13.2904（2）, c = 19.1104（2）A, β= 109.378（1）°, V = 3085.89（8）A^3, Z = 4, Mr = 746.36, Dc = 1.606 g/cm^3, μ= 0.808 mm^-1, F（000） = 1536, the final R = 0.0543 and wR = 0.1306 for 5393 independent reflections. The magnetic measurement of the compound at room temperature shows that it is diamagnetic and the cobalt ion is in low spin ＋3 oxidation state. ES-MS experiments show that the [Co（dpa）E（Gly）]^2＋ cation is very stable in the methanol solution.
基金
① This project was supported by the Natural Science Foundation of Jiangsu Province (BK2005045)
the Key Marine Biotechnology Lab. of HHIT and the Natural Science Foundation of HHIT (Z2005016)
