Preparation and Characterization of Cobalt(III) Complexes Containing (2-Aminoethyl)dimethylarsine (edma). Resolution and Racemization of<i>fac</i>-[Co(edma)<sub>3</sub>]<sup>3+</sup>
作者:Kazuhiro Nemoto、Masakazu Kita、Masaaki Kojima、Junnosuke Fujita
DOI:10.1246/bcsj.62.1517
日期:1989.5
(2-Aminoethyl)dimethylarsine (edma) and its cobalt(III) complexes, trans(X,X),cis(As,As)-[CoX2(edma)2]+ (X=Cl, Br, and I), trans(As,As)- and trans(As,N)-[Co(acac)(edma)2]2+ (acac=acetylacetonate ion), trans(As,N)-[Co(CO3)(edma)2]+, [Co(acac)2(edma)]+, and fac-[Co(edma)3]3+ were prepared and characterized. From a comparison of the first d–d absorption bands of analogous diamine and (2-aminoethyl)dimethylphosphine
(2-氨基乙基)二甲基胂 (edma) 及其钴 (III) 配合物,反式 (X, X), 顺式 (As, As)-[CoX2(edma)2]+ (X=Cl, Br, and I), trans(As,As)- 和 trans(As,N)-[Co(acac)(edma)2]2+ (acac=乙酰丙酮离子), trans(As,N)-[Co(CO3)(edma)2 ]+、[Co(acac)2(edma)]+ 和 fac-[Co(edma)3]3+ 被制备和表征。通过比较类似二胺和(2-氨基乙基)二甲基膦(edmp)配合物的第一个 d-d 吸收带,发现 5B 族元素的光谱化学系列为 P>As>N。fac-[Co(edma)3]3+ 复合物被解析,(+)490CD-异构体的绝对构型基于CD谱被指定为Λ。在 pH 值和温度范围分别为 7.88-9.32 和 35.0-50.0 °C 的水溶液中研究了