SYNTHESIS, CHARACTERIZATION AND HINDERED ROTATION OF TRIOSMIUM CLUSTERS (MU-H)OS3(CO)10L[ON(CF3)2] [L = CO, CH3CN AND PHCN]

被引：3

作者：

ANG, HG

KOH, CH

KWIK, WL

机构：

[1] Department of Chemistry, National University of Singapore, Singapore, 0511, Lower Kent Ridge Road

来源：

JOURNAL OF ORGANOMETALLIC CHEMISTRY | 1992年 / 435卷 / 1-2期

关键词：

D O I：

10.1016/0022-328X(92)83467-V

中图分类号：

O61 [无机化学];

学科分类号：

070301 ; 081704 ;

摘要：

Bis(trifluoromethyl)nitroxyl radical reacts with H2Os3(CO)10L (L = CH3CN, PhCN) to afford the stable derivatives (mu-H)Os3(CO)10L[ON(CF3)2] in which single crystal X-ray structural analysis reveals that the (CF3)2NO moiety assumes an axial terminal position. Variable-temperature F-19 NMR spectra suggest that rotations of the (CF3)2N moiety about the Os-O bond are hindered due to its proximity to the neighbouring CO groups. The activation energies were estimated from the coalescence temperatures.

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页码：149 / 155

页数：7

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