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An electron poor iridium pincer complex for catalytic alkane dehydrogenation

Kovalenko, Oleksandr O. LU and Wendt, Ola F. LU (2016) In Dalton Transactions 45(40). p.15963-15969
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.

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author
organization
publishing date
type
Contribution to journal
publication status
published
subject
in
Dalton Transactions
volume
45
issue
40
pages
7 pages
publisher
Royal Society of Chemistry
external identifiers
  • scopus:84991298956
  • wos:000386211500027
ISSN
1477-9226
DOI
10.1039/c6dt01816e
language
English
LU publication?
yes
id
ef558f71-4c47-4530-89c4-04f411596a23
date added to LUP
2017-04-25 09:29:03
date last changed
2017-10-22 05:29:49
@article{ef558f71-4c47-4530-89c4-04f411596a23,
  abstract     = {<p>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.</p>},
  author       = {Kovalenko, Oleksandr O. and Wendt, Ola F.},
  issn         = {1477-9226},
  language     = {eng},
  number       = {40},
  pages        = {15963--15969},
  publisher    = {Royal Society of Chemistry},
  series       = {Dalton Transactions},
  title        = {An electron poor iridium pincer complex for catalytic alkane dehydrogenation},
  url          = {http://dx.doi.org/10.1039/c6dt01816e},
  volume       = {45},
  year         = {2016},
}