Результаты исследований: Научные публикации в периодических изданиях › статья › Рецензирование
Crystal chemistry and Raman spectroscopy of two synthetic sodalite-type aluminosilicates with [MoO4]2− and [WO4]2− groups. / Shchipalkina, Nadezhda V.; Zubkova, Natalia N.; Kotelnikov, Alexey R.; Koshlyakova, Natalia N.; Pekov, Igor V.; Ksenofontov, Dmitry A.; Britvin, Sergey N.
в: Physics and Chemistry of Minerals, Том 48, № 5, 19, 05.2021.Результаты исследований: Научные публикации в периодических изданиях › статья › Рецензирование
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TY - JOUR
T1 - Crystal chemistry and Raman spectroscopy of two synthetic sodalite-type aluminosilicates with [MoO4]2− and [WO4]2− groups
AU - Shchipalkina, Nadezhda V.
AU - Zubkova, Natalia N.
AU - Kotelnikov, Alexey R.
AU - Koshlyakova, Natalia N.
AU - Pekov, Igor V.
AU - Ksenofontov, Dmitry A.
AU - Britvin, Sergey N.
N1 - Publisher Copyright: © 2021, The Author(s), under exclusive licence to Springer-Verlag GmbH Germany, part of Springer Nature. Copyright: Copyright 2021 Elsevier B.V., All rights reserved.
PY - 2021/5
Y1 - 2021/5
N2 - The synthetic nosean- and haüyne-like aluminosilicates with (MoO4)2− and (WO4)2− extra-framework anions were synthesized in H2O-bearing systems (3 kbar, 750 °C) and studied by means of electron microprobe analysis, Raman spectroscopy, powder and single-crystal X-ray diffraction. The nosean-like phase contains up to 10.6 wt% MoO3 and up to 5.1 wt% WO3; the maximum content of MoO3 in the haüyne-like phase is 22.5 wt%. The nosean-like phase with (MoO4)2− and (WO4)2− is cubic, P-43m, a = 9.1278(10) Å, V = 760.498(14) Å3, Z = 1. This compound with the crystal chemical formula Na7.68[(Al,Si)12O24] {[(Mo0.65W0.35)O4]0.78□0.22}·H2O has a disordered Al/Si framework, that is caused by the high temperature of crystallization (t = 750 °C) with further quenching at room temperature. Despite the same conditions of synthesis, the haüyne-like phase with (MoO4)2−, Na5.12Ca1.92[Al6Si6O24](MoO4)1.52 has an Al/Si-ordered framework. Its space group is P-43n, a = 9.1516(4) Å, V = 766.46(6) Å3, Z = 1. In both synthesized sodalite-type aluminosilicates the anion groups (MoO4)2− and (WO4)2− are dynamically disordered. The polarized Raman spectra of both aluminosilicates show that Raman-active modes of (MoO4)2− and (WO4)2− correspond to vibrations of tetrahedral anions with symmetry Td. The presence of H2O was fixed only in the nosean-like compound and no preferred orientation of water molecule was detected.
AB - The synthetic nosean- and haüyne-like aluminosilicates with (MoO4)2− and (WO4)2− extra-framework anions were synthesized in H2O-bearing systems (3 kbar, 750 °C) and studied by means of electron microprobe analysis, Raman spectroscopy, powder and single-crystal X-ray diffraction. The nosean-like phase contains up to 10.6 wt% MoO3 and up to 5.1 wt% WO3; the maximum content of MoO3 in the haüyne-like phase is 22.5 wt%. The nosean-like phase with (MoO4)2− and (WO4)2− is cubic, P-43m, a = 9.1278(10) Å, V = 760.498(14) Å3, Z = 1. This compound with the crystal chemical formula Na7.68[(Al,Si)12O24] {[(Mo0.65W0.35)O4]0.78□0.22}·H2O has a disordered Al/Si framework, that is caused by the high temperature of crystallization (t = 750 °C) with further quenching at room temperature. Despite the same conditions of synthesis, the haüyne-like phase with (MoO4)2−, Na5.12Ca1.92[Al6Si6O24](MoO4)1.52 has an Al/Si-ordered framework. Its space group is P-43n, a = 9.1516(4) Å, V = 766.46(6) Å3, Z = 1. In both synthesized sodalite-type aluminosilicates the anion groups (MoO4)2− and (WO4)2− are dynamically disordered. The polarized Raman spectra of both aluminosilicates show that Raman-active modes of (MoO4)2− and (WO4)2− correspond to vibrations of tetrahedral anions with symmetry Td. The presence of H2O was fixed only in the nosean-like compound and no preferred orientation of water molecule was detected.
KW - Aluminosilicates
KW - Crystal chemistry
KW - Haüyne
KW - Raman spectroscopy
KW - Sodalite
KW - Synthesis
KW - yne
KW - Haü
UR - http://www.scopus.com/inward/record.url?scp=85104158474&partnerID=8YFLogxK
UR - https://www.mendeley.com/catalogue/b846fdaa-c292-3ed7-9c13-ab00dcaffc5a/
U2 - 10.1007/s00269-021-01144-8
DO - 10.1007/s00269-021-01144-8
M3 - Article
AN - SCOPUS:85104158474
VL - 48
JO - Physics and Chemistry of Minerals
JF - Physics and Chemistry of Minerals
SN - 0342-1791
IS - 5
M1 - 19
ER -
ID: 76725287