采用封管氯化的方法[1],制得铑的标准溶液.在一定条件下处理H3[RhCl6]溶液,获得K2[Rh(H2O)Cl5]、K3[RhCl6]和[Rh(H2O)6]@(ClO4)3种态.以K2[Rh(H2O)Cl5]和K3[RhCl6]为起始物,利用国产717阴离子树脂,分别得到trans-[Ph(H2O)4Cl2]+、cis-[Rh(H2O)4Cl2]+、mer-[Rh(H2O)3Cl3]、fac-Rh(H2O)3Cl3]和cis-[Rh(H2O)4Cl4]-种态.研究它们的紫外-可见吸收光谱发现,随着配位内界水分子数的增加,其特征吸收峰表现为紫移.通过分析和研究它们的极性及特性吸收峰,提出了铑(Ⅲ)氯水配合物新的鉴别方法.
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