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A magic-angle spinning 31P NMR investigation of crystalline and glassy inorganic phosphates

✍ Scribed by S. Prabhakar; K.J. Rao; C.N.R. Rao

Publisher: Elsevier Science
Year: 1987
Tongue: English
Weight: 473 KB
Volume: 139
Category: Article
ISSN: 0009-2614
DOI: 10.1016/0009-2614(87)80158-6

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✦ Synopsis

P NMR spectra of several inorganic phosphates have been examined both in the crystalline and the glassy states. The parameter (Z,&)q clearly demarcates ortho-, pyro-and meta-phosphates in terms of the "P chemical shifts. Based on such a diagram, inorganic phosphate glasses are found to consist essentially of metaphosphate units. NMR resonance of the glasses are generally much broader than those of crystalline phosphates. * Contribution No. 446 from the Solid State and Structural Chemistry Unit.

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