SYNTHESIS AND REACTIVITY OF [IRH2((T)BU2P)CH2CH2CHCH2CH2P((T)BU2)], A DYNAMIC IRIDIUM POLYHYDRIDE COMPLEX

被引：49

作者：

MCLOUGHLIN, MA

FLESHER, RJ

KASKA, WC

MAYER, HA

机构：

[1] UNIV CALIF SANTA BARBARA, DEPT CHEM, SANTA BARBARA, CA 93106 USA

[2] UNIV TUBINGEN, INST ANORGAN CHEM, D-72076 TUBINGEN, GERMANY

来源：

ORGANOMETALLICS | 1994年 / 13卷 / 10期

关键词：

D O I：

10.1021/om00022a017

中图分类号：

O61 [无机化学];

学科分类号：

070301 ; 081704 ;

摘要：

The iridium complex [IrH4((t)Bu2P)CH2CH2CHCH2CH2P((t)Bu2)] (2) is formed by treating [IrHCl((t)Bu2P)CH2CH2CHCH2CH2P((t)Bu2)] (1) with LiBEt3H in a hydrogen atmosphere. Subsequent sublimation of [IrH4((t)Bu2P)CH2CH2CHCH2CH2P((t)Bu2)] (2) causes the loss of hydrogen to give [IrH2((t)Bu2P)CH2CH2CHCH2CH2P((t)Bu2)] (3). The metal-bound hydrogen atoms of 3 show a broad resonance at delta -23.5 with a T1min = 79 ms, (-70-degress-C, 250 MHz), which suggests a classical hydride-type bonding. A dynamic motion of the metalated CH bond and/or exchange of the ''agostic'' hydrogen atom is reflected in the C-13 NMR equivalence of the tertiary butyl group quaternary carbon atoms.

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页码：3816 / 3822

页数：7

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