Characterization and molecular structure of 1-hydro-2, 8, 9-trioxa-1-phospha-5-aza-tricyclo [3.3. 3.0] undecane tetrafluoroborate. Pentacoordination of phosphorus

JC Clardy, DS Milbrath, JP Springer…

Index: Clardy,J.C. et al. Journal of the American Chemical Society, 1976 , vol. 98, p. 623 - 624

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Citation Number: 38

Abstract

While five-coordination in pentavalent phosphorus systems is profusely documented in the literature,'phosphonium cations have been found to be consistently four-coordinate. Here we report the characterization and molecular structure of 1 in which the presence of an N--P coordinate bond confers a trigonal bipyramidal geometry on the phosphorus atom. The second step of the reaction below invariably gives the expected alkyl phosphonium cation ...