Journal of the Chemical Society, Dalton Transactions p. 51 - 54 (1982)
Update date:2022-09-26
Topics:
Allen, David W.
Taylor, Brian F.
The donor properties of a series of heteroarylphosphines (bearing 2- and 3-furyl, 2- and 3-thienyl, and 1-methylpyrrol-2-yl groups directly bound to phosphorus) towards selenium and platinum(II) acceptors have been investigated by 31P n.m.r. studies of the one-bond coupling constants 1J(77Se-31P) and 1J(195Pt-31P).It is shown that the respective coupling constants increase as the heteroaryl groups become more electron withdrawing, indicating an increased s character for the phosphorus lone pair.The implications of this for the relative donor properties of the heteroarylphosphines and PPh3 are considered.
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