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Letters. Chloride ion sites in silicate and aluminosilicate glasses: A preliminary study by 35Cl solid-state NMR

  • Jonathan F. Stebbins EMAIL logo and Lin-Shu Du
Published/Copyright: March 28, 2015
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Abstract

Despite the importance of the chloride ion in magmas and the fluids that separate from them, very little is known about atomic-scale structural environments for Cl- in silicate glasses. We present here the first solid-state 35Cl NMR data for Cl in silicate and aluminosilicate glasses, made possible by the availability of very high (14.1 to 18.8 Tesla) magnetic fields. We find that 35Cl has a wide range in chemical shifts that correlate well with cation-Cl distance and thus contain considerable structural information. In general, Cl is coordinated primarily by network-modifying alkali or alkaline earth cations, and we see no evidence for Al-Cl bonding.

Received: 2001-10-23
Accepted: 2001-11-7
Published Online: 2015-3-28
Published in Print: 2002-2-1

© 2015 by Walter de Gruyter Berlin/Boston

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