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

Autor:	Georg Süss-Fink, Susanne Haak, Helen Stoeckli-Evans, Vincent Ferrand
Rok vydání:	1999
Předmět:	Process Chemistry and Technology Methyl acetate Inorganic chemistry chemistry.chemical_element Homogeneous catalysis Protonation Medicinal chemistry Catalysis chemistry.chemical_compound chemistry Methanol Iridium Physical and Theoretical Chemistry Carbonylation Methyl iodide
Zdroj:	Journal of Molecular Catalysis A: Chemical. 143:163-170
ISSN:	1381-1169
DOI:	10.1016/s1381-1169(98)00380-x
Popis:	The cluster anion [Os3Ir(CO)13]− (1) was prepared in 50% yield by reaction of Os3(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°C, 30 bar) within 14 h.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::e47c5f2e7ca02aecc15b7c71fd568f09 https://doi.org/10.1016/s1381-1169(98)00380-x Zobrazit plný text záznamu Full Text from ScienceDirect