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A New Organic-Cation Cyclotetraphosphate C10H28N4P4O12·4H2O: Crystal Structure, Thermal Analysis, and Vibrational Spectra

✍ Scribed by E.H Soumhi; I Saadoune; A Driss

Publisher: Elsevier Science
Year: 2001
Tongue: English
Weight: 221 KB
Volume: 156
Category: Article
ISSN: 0022-4596
DOI: 10.1006/jssc.2000.9007

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✦ Synopsis

A new organic-cation phosphate of C 10 H 28 N 4 P 4 O 12 ' 4H 2 O has been obtained. The crystal structure determination shows that this compound crystallizes in the triclinic system, space group P؊1, with the following unit cell parameters: a ‫؍‬ 9.147(3) A > ; b ‫؍‬ 9.258(3) A > ; c ‫؍‬ 8.974(3) A > ; ‫؍‬ 79.92(3)3; ‫؍‬ 117.41(3)3;

‫؍‬ 116.58(3)3. P 4 O 12 cycles, which present the strongest distortion in this kind of materials, are connected through O W +H=O+P hydrogen bonds, so that bidimensional layers parallel to the ab plane are formed. These layers are themselves interconnected by means N+H=O+P hydrogen bonds originating from the (C 10 H 28 N 4 ) 4؉ cations forming a three-dimensional network. The hydrated character of this phosphate is con5rmed by the coupled TG-DTA thermal study which shows the successive loss of water molecules. The molecular arrangement within the structure has been con5rmed by the IR spectroscopy. 2001 Academic Press

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