ETHYLENEDIAMMONIUM CYCLOOCTAPHOSPHATE HEXAHYDRATE - THE 1ST EXAMPLE OF AN ORGANIC-CATION CYCLOOCTAPHOSPHATE

Citation
Mt. Averbuchpouchot et al., ETHYLENEDIAMMONIUM CYCLOOCTAPHOSPHATE HEXAHYDRATE - THE 1ST EXAMPLE OF AN ORGANIC-CATION CYCLOOCTAPHOSPHATE, European journal of solid state and inorganic chemistry, 30(5), 1993, pp. 557-563
Citations number
12
Categorie Soggetti
Chemistry Inorganic & Nuclear
ISSN journal
09924361
Volume
30
Issue
5
Year of publication
1993
Pages
557 - 563
Database
ISI
SICI code
0992-4361(1993)30:5<557:ECH-T1>2.0.ZU;2-S
Abstract
We describe chemical preparation and crystal structure of ethylene-dia mmonium cyclooctaphosphate hexahydrate, the first reported example of an organic-cation cyclooctophosphate. [NH3-(CH2)2-NH3]4P8O24.6H2O is m onoclinic, P2(1)/n, with Z = 2 and the following unit-cell dimensions : a = 11.833(2), b = 21.844(3), c = 7.467(2) angstrom, beta = 98.49(3) degrees. The P8O24 ring anicn is centrosymmmetrical as well as two of the three crystallographically independent ethylenediammonium groups. The hydrogen-bond scheme is given.