Crystal and molecular structure of 6-chloro-5,6,7,12-tetrahydro-2,5,7,10-tetramethyldibenzo[d,g][1,3,2]diazaphosphocine 6-oxide

Abstract

The structure of the title compound has been determined by X-ray crystallography. The crystals are triclinic, space group P, with Z= 2 in a unit cell of dimensions a= 9·151 ± 0·003, b= 9·610 ± 0·003, c= 13·801 ± 0·004 Å, α= 96·10, β= 126·12, γ= 106·25°, all ±0·01°. The structure was solved by Patterson and Fourier methods and refined by least-squares techniques to R 0·082 for 2381 independent reflections. The eight-membered ring is constructed from three planar groups of atoms and the environment of the nitrogen atoms is also planar.