Accession Number : ADA188753

Title :   The Crystal Structure of 2,2-Bis(Trimethylsilylamino)-Tetrachlorocyclotriphosphazene.

Descriptive Note : Technical rept.,

Corporate Author : VERMONT UNIV BURLINGTON DEPT OF CHEMISTRY

Personal Author(s) : Allen, C W ; Brown, D E ; Cordes, A W ; Craig, S L

PDF Url : ADA188753

Report Date : 20 Nov 1987

Pagination or Media Count : 4

Abstract : Tetrachlorocyclotriphosphazene crystals have unique observed reflections. The phosphazene ring lies on a crystallographic 2-fold axis and is planar within 0.031(5)A. The exo P-N bond distance is 1.609(5) and the Si-N bond distance is 1.757(5)A which suggests preferential nitrogen lone pair delocalization to the phosphorus atom. P-N distances in the ring alternate (from the P with the exo N atoms) from 1.617(5) to 1.551(5) to 1.591(4)A. The structural and 31 phosphorus 31 nmr parameters of 2,2-N3P3C14NHS;Me3)2 are compared to the analogous tert-butylamino derivative. Keywords: Cyclophosphazene, Silylamines; X-Ray crystallography.

Descriptors :   *PHOSPHAZENE, *CYCLIC COMPOUNDS, *CHLORINE COMPOUNDS, *METHYL RADICALS, *AMINO PLASTICS, *SILANES, ATOMS, BONDING, CRYSTAL STRUCTURE, CRYSTALLOGRAPHY, N TYPE SEMICONDUCTORS, NITROGEN, P TYPE SEMICONDUCTORS, PHOSPHORUS, RANGE(DISTANCE), RINGS, X RAYS

Subject Categories : Organic Chemistry

Distribution Statement : APPROVED FOR PUBLIC RELEASE