Issue 8, 2002
From the journal:

Journal of the Chemical Society, Dalton Transactions

Structure of calcium tetrasodium bis-cyclotriphosphate CaNa4(P3O9)2 by X-ray diffraction and solid-state NMR

Isaac Abrahams,*a   Geoffery E. Hawkes,a   A. Ahmed,†a   Katrin Franks,b   Jonathan C. Knowles,b   Philippe R. Bodart‡c  and  Teresa Nunesc  

* Corresponding authors

a Structural Chemistry Group, Department of Chemistry, Queen Mary, University of London, Mile End Road, London, UK
E-mail: i.abrahams@qmul.ac.uk

b Department of Biomaterials, Eastman Dental Institute, University of London, Gray's Inn Road, London, UK

c ICTPOL/IST, Departamento de Engenharia de Materiais, Av. Rovisco Pais, 1096 Lisboa Codex, Portugal

Abstract

The crystal structure of CaNa4(P3O9)2 has been determined using single crystal X-ray diffraction. The 23Na and 31P magic angle spinning solid-state NMR data are consistent with the centrosymmetric space group assignment of C2/c and the cation distribution of two distinct sodium sites. The structure determination confirms the presence of the cyclic triphosphate unit as opposed to a cyclic hexaphosphate or metaphosphate chains. Phosphorus and sodium edge EXAFS data are discussed with respect to the structure.

Graphical abstract: Structure of calcium tetrasodium bis-cyclotriphosphate CaNa4(P3O9)2 by X-ray diffraction and solid-state NMR

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Article information

DOI
https://doi.org/10.1039/B109036B
Article type
Paper
Submitted
04 Oct 2001
Accepted
25 Jan 2002
First published
15 Mar 2002

J. Chem. Soc., Dalton Trans., 2002, 1800-1805

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Structure of calcium tetrasodium bis-cyclotriphosphate CaNa4(P3O9)2 by X-ray diffraction and solid-state NMR

I. Abrahams, G. E. Hawkes, A. Ahmed, K. Franks, J. C. Knowles, P. R. Bodart and T. Nunes, J. Chem. Soc., Dalton Trans., 2002, 1800 DOI: 10.1039/B109036B

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