A pentaerythritol-derived spirodiphosphonate

Authors
Elnagar, HY Ranken, PF Fronczek, FR
Citation
Hy. Elnagar et al., A pentaerythritol-derived spirodiphosphonate, ACT CRYST C, 56, 2000, pp. 905-906
Citations number
22
Categorie Soggetti
Physical Chemistry/Chemical Physics
Journal title
ACTA CRYSTALLOGRAPHICA SECTION C-CRYSTAL STRUCTURE COMMUNICATIONS
ISSN journal
01082701 → ACNP
Volume
56
Year of publication
2000
Part
7
Pages
905 - 906
Database
ISI
SICI code
0108-2701(200007)56:<905:APS>2.0.ZU;2-H
Abstract
The title spirodiphosphonate, 3,9-dimethyl-2,4,8,10-tetraoxa-3 lambda(5) ,9 lambda(5)-diphosphaspiro[5.5]undecane-3,9-dione, C7H14O6P2, a polymer addi tive, has crystallographic symmetry 2. At 100 K, its six-membered rings hav e chair conformations, with endocyclic torsion-angle magnitudes in the rang e 51.87 (8)- 58.93 (9)degrees. The P=O distance is 1.4749 (8) Angstrom, whi le the P- C(methyl) distance is 1.7691 (12) Angstrom.