New Rh(III) complexes of 5-methyl-5-(pyridyl)-2,4-imidazolidenedione: Synthesis, X-ray structure, electrochemical study and catalytic behaviour for hydrogenation of ketones
作者:Seyyed Javad Sabounchei、Mohsen Sayadi、Mojdeh Sadat Hashemi、Ali Hashemi、Davood Nematollahi、Eslam Salahifar、Robert W. Gable
DOI:10.1002/aoc.3716
日期:2017.10
We describe the reaction of anion [RhCl6]3− with a series of hydantoin ligands (HL1, HL2 and HL3 = 5‐methyl‐5‐(2‐, 3‐ and 4‐pyridyl)‐2,4‐imidazolidenedione, respectively). Based on spectroscopic, cyclic voltammetric, elemental and MS analyses, the complexes have the general formula K[RhCl2(L1)2] (1), cis‐ and trans‐K[RhCl4(HL2)2] (2a and 2b) and cis‐ and trans‐K[RhCl4(HL3)2] (3a and 3b). Complexes
我们描述了阴离子[RhCl 6 ] 3-与一系列乙内酰脲配体的反应(HL1,HL2和HL3分别为5-甲基-5-(2-,3-和4-吡啶基)-2,4-咪唑烷二酮) )。根据光谱,循环伏安,元素分析和质谱分析,该配合物的通式为K [RhCl 2(L1)2 ](1),顺式和反式-K [RhCl 4(HL2)2 ](2a和2b)与顺式-和反式-K [的RhCl 4(HL3)2 ](图3a和图3b)。复合体使用红外,1 H NMR和13 C NMR光谱分析成功地表征了2a,2b,3a和3b。配合物1在二甲亚砜(DMSO)中的溶解导致消除了一个KL1配体并消除了两个作为配体的DMSO分子并将该配合物转化为顺式和反式[RhCl 2 L1(DMSO)2 ](1a和1b)。重结晶导致1a晶体的分离和分离从最初的混合物。X射线分析结果表明,该配合物结晶为溶剂化的顺式[RhCl 2 L1(DMSO)2 ] DMS