Sterically hindered diphosphines (Ph2P)2C=CHR (R = Me or Ph) and their derivatives

Bookham, Jonathan, Conti, Fosca, McFarlane, H.Christina E., McFarlane, William and Thornton-Pett, Mark (1994) Sterically hindered diphosphines (Ph2P)2C=CHR (R = Me or Ph) and their derivatives. Journal of the Chemical Society, Dalton Transactions (12). pp. 1791-1797. ISSN 1472-7773

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Abstract

Reactions of (Ph2P)2C=CHR (R = Me or Ph) with E (E = S or Se) yielded the corresponding mono- and di-chalcogenides and the mixed S/Se derivatives, 1H, 13C and 31P NMR parameters for which are reported. These are rationalized in terms of conformational preferences associated with the relative P-E and phosphorus-lone pair orientations. The complexes [M(CO)4{(Ph2P)2C=CHR}] (M = Mo or W, R = Me or Ph) have also been prepared and have NMR parameters which can be accounted for similarly. The crystal structure of (Ph2P)2C=CHMe has been determined by single-crystal X-ray diffraction and shows that the solid-state conformation is similar to that deduced in solution on the foregoing basis.

Item Type:	Article
Subjects:	F100 Chemistry
Department:	Faculties > Health and Life Sciences > Applied Sciences
Depositing User:	Becky Skoyles
Date Deposited:	28 Jan 2015 10:34
Last Modified:	12 Oct 2019 17:29
URI:	http://nrl.northumbria.ac.uk/id/eprint/20214

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