Cis-trans isomerism in copper(II) complexes with N-acyl thiourea ligands
Cis-trans isomerism in copper(II) complexes with N-acyl thiourea ligands
复制标题
DOI：
10.1002/zaac.200400030
复制
发表时间：
2004-01-01
影响因子：
1.4
通讯作者：
Beyer, L
中科院分区：
文献类型：
--
作者：
Hernández, W;Spodine, E;Beyer, L
N-酰基硫脲配合物双[N,N-二乙基-N'-(对硝基苯甲酰基)-硫脲基]铜(II) (1a,1b)和双(N,N-二苯基-N'-苯甲酰基硫脲基)铜(II) (2a,2b)在每种情况下以两种变体形式结晶。 X射线结构分析表明1a和1b为顺反异构体。这对于 N-酰基硫脲配合物来说是非常不寻常的，因为除了一种铂（II）配合物之外，迄今为止仅发现了顺式配合物。相比之下，另一个复合物的 2a 和 2b 型的 X 射线结构分析显示没有 eis-trans 对。两种修饰都是顺式复合物。在溶液中，铜(II)络合物的两种异构体均可通过 EPR 光谱观察到。
The N-acyl thiourea complexes bis[N,N-diethyl-N'-(p-nitrobenzoyl)-thioureato]copper(II) (1a,1b) and bis(N,N-diphenyl-N'-benzoylthioureato)copper(II) (2a,2b) crystallize in each case in two modifications. X-ray structural analysis shows that 1a and 1b are cis-trans isomers. This is very unusual for N-acyl thioureato complexes because with exception of one platinum(II) complex up to now only cis complexes have been found. In contrast X-ray structural analysis of both forms 2a and 2b of the other complex shows no eis-trans pair. Both modifications are cis complexes. In solution both isomers of the copper(II) complexes are observable by EPR spectroscopy.