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Synthesis and structural characterization of the first bis(benzimidazolin-2-ylidene) complexes of nickel(II)

被引：104
|
作者：
Huynh, HV
Holtgrewe, C
Pape, T
Koh, LL
Hahn, E
机构：
[1] Natl Univ Singapore, Dept Chem, Singapore 117543, Singapore
[2] Univ Munster, Inst Anorgan & Analyt Chem, D-48149 Munster, Germany
来源：
ORGANOMETALLICS | 2006年 / 25卷 / 01期
关键词：
D O I：
10.1021/om050781i
中图分类号：
O61 [无机化学];
学科分类号：
070301 ; 081704 ;
摘要：
The reaction of Ni(OAc)2 with the benzimidazolium salts 1,3-dimethylbenzimidazolium iodide (1), 1,3-bis(2-propenyl)benzimidazolium bromide (2), 1,3-dipropylbenzimidazolium bromide (3), 1-(2propenyl)-3-methylbenzimidazolium bromide (6), and 1-propyl-3-methylbenzimidazolium iodide (7) in molten [Bu4N]X (X = Br, I, BF4) as ionic liquid afforded novel square-planar nickel(II) bis(benzimidazolin-2-ylidene) complexes of the general formula trans-[NiX2(NHC)(2)] (X = I, NHC = 1,3-dimethylbenzimidazolin-2-ylidene, 8; X = Br, NHC = 1,3-bis(2-propenyl)benzimidazolin-2-ylidene, 9; X = Br, NHC = 1,3-dipropylbenzimidazolin-2-ylidene, 10; X = Br, NHC = 1-(2-propenyl)-3-methylbenzimidazolin2-ylidene, 11; X = 1, NHC = 1-propyl-3-methylbenzimidazolin-2-ylidene, 12). X-ray diffraction studies of 8-12 reveal a square-planar coordination geometry for all complexes with the carbene ligands arranged in a trans fashion.
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页码：245 / 249
页数：5
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