Characterization of a New Organic-Cation Cyclotetraphosphate: (1,4-HOC6H4NH3)4P4O12· 6H2O

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

• Publisher: Elsevier Science
• Year: 1999
• Tongue: English
• Weight: 334 KB
• Volume: 144
• Category: Article
• ISSN: 0022-4596
• DOI: 10.1006/jssc.1999.8151

✦ Synopsis

The tetra(para-phenolammonium)cyclotetraphosphate hexahydrate, (1,4-HOC 6 H 4 NH 3 ) 4 P 4 O 12 '6H 2 O (M‫15.468؍‬ g mol ؊1 ), is monoclinic P2 1 /c with the unit cell parameters a ‫؍‬ 9.836(2) A s , b ‫؍‬ 8.591(1) A s , c ‫؍‬ 22.769(5) A s , ‫؍‬ 95.41(2)3. The structure of this compound can be described as a succession of inorganic and organic sheets parallel to the (001) plane. The existence of the OH and NH 3 groups in position para to the organic cation leads to the cohesion of the inorganic sheets, forming a three-dimensional network.The IR spectrum of (1,4-HOC 6 H 4 NH 3 ) 4 P O 12 ' 6H 2 O is reported and discussed according to the theoretical group analysis. The IR data con5rm the atomic arrangement within the structure. The coupled TG+DTA thermal study shows the successive departure of four and two water molecules, con-5rming the hydrated character of this cyclophosphate. 1999