Phosphoric triamides. 31 Phosphorus NMR chemical shift as a function of the P–N bond characteristics

…, XY Mbianda, TA Modro, LR Nassimbeni

Index: Bourne, Susan A.; Mbianda, Xavier Y.; Modro, Tomasz A.; Nassimbeni, Luigi R.; Wan, Huijie Journal of the Chemical Society. Perkin Transactions 2, 1998 , # 1 p. 83 - 88

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Citation Number: 2

Abstract

Six phosphoric triamides in which amide nitrogens are incorporated into an increasing number (from 0 to 3) of the 1, 3, 2-diazaphospholidin-2-one rings have been prepared and their crystal structures have been determined. The structural changes from the non-cyclic to the mono-, di-and tri-cyclic systems result in the decrease of the N–P–N bond angles and the increase of the P–N bond distance. These changes are paralleled by a strong ...