Carbene complexes. Part II. Thermally-induced isomerisations of trans-platinum(II) and palladium(II) complexes and the chemistry of the cis- and trans-isomers
Carbene complexes. Part II. Thermally-induced isomerisations of trans-platinum(II) and palladium(II) complexes and the chemistry of the cis- and trans-isomers
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卡宾配合物。
DOI：
10.1039/dt9730000906
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发表时间：
1973
期刊：
影响因子：
--
通讯作者：
M. Lappert
中科院分区：
文献类型：
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作者：
B. etinkaya;Engin C etinkaya;M. Lappert
反式-二卤代铂（II）或钯（II）（卡宾）络合物通过热或在极性溶剂中异构化为在化学上更稳定的顺式异构体。反应性下降，从Pd II到Pt II和增加的正烷基链长度的叔膦反式的卡宾配体。性质的顺式和反式卡宾配合物进行了比较，并出现一定的概括。二氯络合物通过Br-（LiBr）、Me-（LiMe）、H-（Et 3SiH）和PR 3（NaBF 4/PR 3）进行Cl-置换（顺式比反式更容易，PdII比PtII更容易）。反式氢化（氯）铂（II）和二甲基铂（II）卡宾络合物是特别感兴趣的。
trans-Dihalogenoplatinum(II) or palladium(II)(carbene) complexes are isomerised either thermally or in polar solvents to the thermodynamically more stable cis-isomers. Reactivity decreased from PdII to PtII and with increasing n-alkyl chain-length of a tertiary phosphine trans to the carbene ligand. Properties of cis- and trans-carbene complexes are compared and certain generalisations emerge. Dichloro-complexes undergo Cl– displacement (cis- more readily than trans- and PdII more than PtII) by Br–(LiBr), Me–(LiMe), H–(Et3SiH), and PR3(NaBF4/PR3). trans-Hydrido(chloro)platinum(II) and dimethylplatinum(II) carbene complexes are of particular interest.