The mixed-metal carbonyl cluster anion [Os3Ir(CO)13]-:: Synthesis, structure, reactivity and catalytic activity in the carbonylation of methanol

被引：19

作者：

Süss-Fink, G ^{[1
]}

Haak, S ^{[1
]}

Ferrand, V ^{[1
]}

Stoeckli-Evans, H ^{[1
]}

机构：

[1] Univ Neuchatel, Inst Chim, CH-2000 Neuchatel, Switzerland

来源：

JOURNAL OF MOLECULAR CATALYSIS A-CHEMICAL | 1999年 / 143卷 / 1-3期

关键词：

methanol carbonylation; acetic acid; methyl acetate; homogenous catalysis; methyl iodide; hydriodic acid; cluster; osmium; iridium;

D O I：

10.1016/S1381-1169(98)00380-X

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

The cluster anion [Os3Ir(CO)(13)](-) (1) was prepared in 50% yield by reaction of Os-3(CO)(12) with [Ir(CO)(4)](-). The single-crystal X-ray structure analysis of the bis(triphenylphosphoranylidene)ammonium salt shows 1 to consist of a tetrahedral metal core with one of the 13 carbonyl ligands being bridging. Protonation of 1 led to the neutral cluster HOs3Ir(CO)(13) (2), whereas the hydrogenation gave the cluster anion [H2Os3Ir(CO)(12)](-) (3). The catalytic activity of 1 for the carbonylation of methanol was studied. Using CH3I as co-catalyst, catalytic turnover numbers up to 1800 were obtained (140 degrees C, 30 bar) within 14 h. (C) 1999 Elsevier Science B.V. All rights reserved.

引用

页码：163 / 170

页数：8

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