The disecondary phosphines [PhHP(CH2)nPHPh] (n = 2-4, 6): improved syntheses, NMR spectra and complexation behaviour with group VI Transition metal hexacarbonyls

Kimpton, Bryan, McFarlane, William, Muir, Alan, Patel, Pallavi and Bookham, Jonathan (1993) The disecondary phosphines [PhHP(CH2)nPHPh] (n = 2-4, 6): improved syntheses, NMR spectra and complexation behaviour with group VI Transition metal hexacarbonyls. Polyhedron, 12 (20). pp. 2525-2534. ISSN 0277-5387

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Official URL: http://dx.doi.org/10.1016/S0277-5387(00)83079-X

Abstract

Improved preparations of the disecondary phosphines PhHP(CH2)nPHPh (n = 2, mppe; n = 3, mppp; n = 4, mpppb; n = 6 mpph) by the lithium cleavage of the corresponding ditertiary phosphine Ph2P(CH2)nPPH2 are described and various NMR parameters are reported; a 12 13C isotope effect upon δ(13P) is observed in the case of mppe. Reactions of mppe and mppp with [M(CO)6] (M = Cr, Mo, W) yield 1:1 complexes; both the meso and the rac isomers are produced, are separated and are unequivocally characterized by elemental analysis, vibrational spectroscopy and 1H, 13C and 31P NMR spectroscopy.

Item Type: Article
Subjects: F100 Chemistry
Department: Faculties > Health and Life Sciences > School of Life Sciences > Applied Sciences
Depositing User: Becky Skoyles
Date Deposited: 18 Feb 2015 10:12
Last Modified: 10 Aug 2015 11:53
URI: http://nrl.northumbria.ac.uk/id/eprint/18598

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