Remarkable carbene-induced transformation of 2,4,6-tri-tert-butyl-1,3,5-triphosphabenzene, P3C3But3, to the 1,2,4-triphosphole, P3C2But2CBut(carbene). Crystal and molecular structure of the planar triphosphole complex [Mo(CO)3(η5-P3C2But2CBut(carbene))] [carbene = C(N(Me)C(Me)=C(Me)N(Me))]

Scott B. Clendenning; Peter B. Hitchcock; John F. Nixon; László Nyulászi

doi:10.1039/B001285H

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Remarkable carbene-induced transformation of 2,4,6-tri-tert-butyl-1,3,5-triphosphabenzene, P₃C₃Bu^t₃, to the 1,2,4-triphosphole, P₃C₂Bu^t₂CBu^t(carbene). Crystal and molecular structure of the planar triphosphole complex [Mo(CO)₃(η⁵-P₃C₂Bu^t₂CBu^t(carbene))] [carbene = C(N(Me)C(Me)=C(Me)N(Me))]Electronic Supplementary information (ESI) available: spectroscopic data for 3 and 4, B3LYP/6-31+G* level generated structure of 3, and reaction of 3 with [PtCl₂(PR₃)]₂. See http://www.rsc.org/suppdata/cc/b0/b001285h/

Scott B. Clendenning,^a Peter B. Hitchcock,^a John F. Nixon*^a and László Nyulászi^b

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* Corresponding authors

^a School of Chemistry, Physics and Environmental Science, University of Sussex, Sussex, Brighton, UK
E-mail: j.nixon@sussex.ac.uk

^b Department of Inorganic Chemistry, Technical University of Budapest, H-1521, Budapest Gellért tér 4, Hungary

Abstract

Treatment of 2,4,6-tri-tert-butyl-1,3,5-triphosphabenzene, P₃C₃Bu^t₃, with the stable carbene 1,3,4,5-tetramethylimidazol-2-ylidene affords the planar 1,2,4-triphosphole, P₃C₂Bu^t₂CBu^t(carben e), [carbene = C(N(Me)C(Me) [double bond, length half m-dash] C(Me)N(Me))] which has been structurally characterised as its η⁵- ligated [Mo(CO)₃] complex; theoretical calculations are presented on the mechanism of this novel reaction.

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Article information

DOI: https://doi.org/10.1039/B001285H
Article type: Communication
Submitted: 16 Feb 2000
Accepted: 22 May 2000
First published: 29 Jun 2000

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Chem. Commun., 2000, 1305-1306

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Remarkable carbene-induced transformation of 2,4,6-tri-tert-butyl-1,3,5-triphosphabenzene, P₃C₃Bu^t₃, to the 1,2,4-triphosphole, P₃C₂Bu^t₂CBu^t(carbene). Crystal and molecular structure of the planar triphosphole complex [Mo(CO)₃(η⁵-P₃C₂Bu^t₂CBu^t(carbene))] [carbene = C(N(Me)C(Me)=C(Me)N(Me))]

S. B. Clendenning, P. B. Hitchcock, J. F. Nixon and L. Nyulászi, Chem. Commun., 2000, 1305 DOI: 10.1039/B001285H

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