Issue 26, 2014

Dehydrogenation of hydrocarbons with metal-carbon multiple bonds and trapping of a titanium(ii) intermediate

Abstract

Reacting (PNP)Ti[double bond, length as m-dash]CHtBu(CH2tBu) with 2,2′-bipyridine (bipy) in cyclohexane or heptane results in dehydrogenation, cleanly producing cyclohexene and 1-heptene, respectively, and a TiII intermediate that is trapped by bipy to produce [(PNP)TiIII(CH2tBu)(bipy˙)] (1). This titanium(II) intermediate reduces the bipy ligand upon coordination to form a TiIII center, where the unpaired electron is antiferromagnetically coupled to the electron of the reduced [bipy˙] π-radical moiety, giving an overall diamagnetic species. Complex 1 has been characterized by NMR and UV-vis spectroscopies as well as single crystal X-ray diffraction studies.

Graphical abstract: Dehydrogenation of hydrocarbons with metal-carbon multiple bonds and trapping of a titanium(ii) intermediate

Supplementary files

Article information

Article type
Communication
Submitted
07 Apr 2014
Accepted
02 May 2014
First published
02 May 2014

Dalton Trans., 2014,43, 9834-9837

Author version available

Dehydrogenation of hydrocarbons with metal-carbon multiple bonds and trapping of a titanium(II) intermediate

A. K. Hickey, M. G. Crestani, A. R. Fout, X. Gao, C. Chen and D. J. Mindiola, Dalton Trans., 2014, 43, 9834 DOI: 10.1039/C4DT01037J

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