Heterocyclic compounds containing phosphorus. Part 34. Crystal and molecular structure of 9-methyl-3,7-diphenyl-1,3,4,6,7,9-hexa-aza-5λ4-phosphabicyclo[3.3.1]nonane-5-thione

Abstract

The structure of the title compound, determined by X-ray crystallography, shows that there is no symmetry plane in the molecule, and one of the two six-membered rings is in a chair form, with the other one in a boat conformation. The sum of the angles around nitrogen indicates that most of the nitrogen atoms α(or β) to phosphorus are pyramidal.