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Three Independent Molecules in the Unit Cell of a Phosphorus Ylide; Changes in the Molecular Geometry on Rotation about the Phosphorus–Carbon Ylide Bond
Author(s) -
Grützmacher Hansjörg,
Pritzkow Hans
Publication year - 1992
Publication title -
angewandte chemie international edition in english
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 5.831
H-Index - 550
eISSN - 1521-3773
pISSN - 0570-0833
DOI - 10.1002/anie.199200991
Subject(s) - ylide , conformational isomerism , phosphonium , molecule , methylene , chemistry , crystallography , phosphorus , stereochemistry , organic chemistry
Molecules with different PCl distances and torsion angles about the PC(ylide) bond are revealed in the crystals of the chlorinated phosphorus ylide 1 . These “frozen” conformers correspond to rotamers about the ylide bond on the energy surface. Ylide 1 reacts with SnCl 2 to give the methylene phosphonium ion 2 , which decomposes in solution affording the phosphane 3 .