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A modular family of phosphine-phosphoramidite ligands and their hydroformylation catalysts: steric tuning impacts upon the coordination geometry of trigonal bipyramidal complexes of type [Rh(H)(CO)2(P^P*)]

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Rebecca Catherine How, Robert Hembre, James A. Ponasik, Ginette S. Tolleson, Matt Clarke

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Abstract

Four new phosphine-phosphoramidite bidentate ligands have been synthesised and studied in rhodium-catalysed hydroformylation. Variable temperature NMR studies have been used along with HPIR to investigate the coordination mode of the trigonal bipyramidal complexes formed from [Rh(acac)(CO)2], ligand and syngas. It was found that small changes to the ligand structure have a large effect on the geometry of the active catalytic species. The rhodium catalysts of these new ligands were found to give unusually high iso-selectivity in the hydroformylation of propene and 1-octene.

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Original languageEnglish
Pages (from-to)118-124
Number of pages7
JournalCatalysis Science & Technology
Volume6
Early online date2 Sep 2015
DOIs
Publication statusPublished - 7 Jan 2016

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