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 ...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.展开更多
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)
文摘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.
