Issue 40, 2016

An electron poor iridium pincer complex for catalytic alkane dehydrogenation

Abstract

A novel electron deficient 4,6-bis(trifluoromethyl)-1,3-phenylene diphosphinite ligand 4 was developed and synthesized. Reaction of Ir precursors with ligand 4 gave chloro(hydride) pincer complex 5, which demonstrated a higher TON in alkane dehydrogenation reactions compared to similar phosphinite based pre-catalysts. The formation of cyclooctene (COE) and tert-butylethylene adducts of the 14e catalysts was also studied and the COE adduct is implicated as the resting state of the catalyst. All compounds were characterized by NMR spectroscopy and, in addition, the molecular structures of key complexes were confirmed by X-ray analysis.

Graphical abstract: An electron poor iridium pincer complex for catalytic alkane dehydrogenation

Supplementary files

Article information

Article type
Paper
Submitted
09 พ.ค. 2559
Accepted
01 ก.ค. 2559
First published
04 ก.ค. 2559
This article is Open Access
Creative Commons BY-NC license

Dalton Trans., 2016,45, 15963-15969

Author version available

An electron poor iridium pincer complex for catalytic alkane dehydrogenation

O. O. Kovalenko and O. F. Wendt, Dalton Trans., 2016, 45, 15963 DOI: 10.1039/C6DT01816E

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