Sterically Hindered Diphosphines (Ph2P)2C=CHR (R = Me or Ph) and their Derivatives

DOI: 10.1039/DT9940001791

Source and publish data:

Journal of the Chemical Society, Dalton Transactions p. 1791 - 1798 (1994)

Update date:2022-08-04

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Authors:

Bookham, Jonathan L.

Conti, Fosca

McFarlane, H. Christina E.

McFarlane, William

Thornton-Pett, Mark

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Article abstract of DOI:10.1039/DT9940001791

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-Ione pair orientations.The complexes > (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.

Full text of DOI:10.1039/DT9940001791

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