Thermal cis—trans isomerization of bis(diamine) cobalt(III) and chromium(III) complexes in a solid phase
作者:R. Tsuchiya、A. Uehara
DOI:10.1016/0040-6031(81)85047-2
日期:1981.1
six-membered rings; all the mixed bis(diamine) complexes isomerize from trans to cis even when they have a combination of five- and six-membered chelate rings. (3) The cobalt(III) complexes isomerize in a temperature range of dehydration and/or dehydrohalogenation with activation energies of about 100 kJ mole −1 , whereas the chromium(III) complexes usually isomerize in the anhydrous state and the activation
摘要 简单双(二胺)配合物 [MX 2 (aa or bb) 2 ]X · HX · n H 2 O 和混合双(二胺)配合物 [MX 2 (aa)(bb)] 的热顺反异构化X·HX·n H 2 O在固相中进行研究,其中M = Co(III)或Cr(III)离子,X = Cl或Br,aa和bb是选自乙二胺(en)的二胺之一, d,l -1,2-丙二胺 (pn), d,l -2,3-丁二胺 (dl -bn), d,l -1,2-环己二胺 (chxn), 1,3-丙二胺 (ln ) 和 d,l -2,4-戊二胺 (ptn),并且 n = 0–2。获得的信息可概括如下。(1)异构化的特征很大程度上取决于配合物中所含金属离子、卤离子和二胺的种类。(2) 在含有 en、pn、dl -bn 或 chxn 可与金属离子形成五元螯合环,而在含有形成六元环的 tn 或 ptn 的简单双(二胺)配合物中检测到顺