S-3,5-DIETHOXY-1-OXA-3,5-DIPHOSPHORINANE-3,5-DIONE AND S-3,5-DIETHOXY-1-OXA-3,5-DIPHOSPHORINANE-3,5-DIONE

Authors
JONES PG WEINKAUF A
Citation
Pg. Jones et A. Weinkauf, S-3,5-DIETHOXY-1-OXA-3,5-DIPHOSPHORINANE-3,5-DIONE AND S-3,5-DIETHOXY-1-OXA-3,5-DIPHOSPHORINANE-3,5-DIONE, Acta crystallographica. Section C, Crystal structure communications, 54, 1998, pp. 1453-1456
Citations number
10
Categorie Soggetti
Crystallography
Journal title
Acta crystallographica. Section C, Crystal structure communications → ACNP
ISSN journal
01082701
Volume
54
Year of publication
1998
Part
10
Pages
1453 - 1456
Database
ISI
SICI code
0108-2701(1998)54:<1453:SAS>2.0.ZU;2-I
Abstract
The title compounds, cis- and trans-C7H16O5P2, display chair conformat ions of the heterocyclic rings, with much larger absolute torsion angl es around C-O-C (> 72 degrees) than around P-C-P (< 47 degrees). Ring angles are lower than tetrahedral at phosphorus, but higher at carbon and oxygen, with a maximum of 116.03(12)degrees for the P-C-P angle of the cis isomer. Several C-H ... O contacts, including one as short as H ... O = 2.27 Angstrom, can be classified as hydrogen bonds.