Adducts of carbenes with group II and XII metallocenes

被引：124

作者：

Arduengo, AJ ^{[1
]}

Davidson, F ^{[1
]}

Krafczyk, R ^{[1
]}

Marshall, WJ ^{[1
]}

Tamm, M ^{[1
]}

机构：

[1] Dupont Co, Expt Stn, Sci & Engn Lab, Wilmington, DE 19880 USA

来源：

ORGANOMETALLICS | 1998年 / 17卷 / 15期

关键词：

D O I：

10.1021/om980438w

中图分类号：

O61 [无机化学];

学科分类号：

070301 ; 081704 ;

摘要：

The reactions and adducts of 1,3,4,5 -tetramethylimidazol-2-ylidene with bis(pentamethylcyclopentadienyl)magnesium, -calcium, -strontium, -barium, or -zinc are described. A consistent tend in the spectroscopic properties and structures of the alkaline earth metallocenes is observed, The adduct between 1,3,4,5-tetramethylimidazol-2-ylidene and bis(pentamethylcyclopentadienyl)zinc shows a structure in which the zinc is only sigma-bonded to the three ligating groups. Among the alkaline earth adducts, the sigma-bonded interaction to the former carbene center of the 1,3,4,5-tetramethylimidazol-2-ylidene shows the shortest metal-carbon distances in each of the structures but the difference between the carbene-metal and pentamethylcyclopentadienyl-metal distances decreases as the atomic number of the metal increases.

引用

页码：3375 / 3382

页数：8

共 19 条

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