SINGLE-CRYSTAL 1H NMR DATA AND HYDROGEN ATOM DISORDER IN LAWSONITE, CaAl2[Si2O7](OH)2Г—H2O
S. G. Kozlova, S. P. Gabuda
A.V. Nikolaev Institute of Inorganic Chemistry, SB RAS, 630090, Russia, Novosibirsk, Lavrentiev ave., 3
Keywords: 1H NMR, hydrogen atom, disorder, lawsonite
Abstract
The dynamic structure of hydrogen sublattice in lawsonite, CaAl2[Si2O7](OH)2×H2O is studied by the solid-state proton magnetic resonance (1H NMR) spectroscopy of single crystal at room temperature. It is shown that both encapsulated water molecules, and hydroxyl OH-groups undergoes the rocking librations of the amplitudes of ~20° for H2O, and ~40° for hydroxyls.
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