Crystal chemistry of elpidite from Khan Bogdo (Mongolia) and its K- and Rb-exchanged forms

Journal Article · Thu Sep 15 00:00:00 EDT 2011 · Crystallography Reports

DOI:https://doi.org/10.1134/S1063774511050117· OSTI ID:22054262

Grigor'eva, A A; Pekov, I V ^[1]; Kolitsch, U ^[2]; Pushcharovsky, D Yu; Vigasina, M F ^[1]; Giester, G; Dordevic, T; Tillmanns, E ^[3]; Chukanov, N V ^[4]

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1. Moscow State University, Faculty of Geology (Russian Federation)
2. Museum of Natural History of Vienna, Department of Mineralogy and Petrography (Austria)
3. University of Vienna, Institute of Mineralogy and Crystallography (Austria)
4. Russian Academy of Sciences, Institute of Problems of Chemical Physics (Russian Federation)

Elpidite Na{sub 2}ZrSi{sub 6}O{sub 15} {center_dot} 3H{sub 2}O [space group Pbcm, a = 7.1312(12), b = 14.6853(12), and c = 14.6349(15) Angstrom-Sign ] from Khan Bogdo (Mongolia) and its K- and Rb-exchanged forms K{sub 1.78}Na{sub 0.16}H{sub 0.06}ZrSi{sub 6}O{sub 15} {center_dot} 0.85H{sub 2}O [Cmce, a = 14.054(3), b = 14.308(3), and c = 14.553(3) Angstrom-Sign ] and Na{sub 1.58}Rb{sub 0.2}H{sub 0.22}ZrSi{sub 6}O{sub 15} {center_dot} 2.69H{sub 2}O [Pbcm, a = 7.1280(10), b = 14.644(3), and c = 14.642(3) Angstrom-Sign ] that were obtained by cation exchange at 90 Degree-Sign C, as well as K{sub 1.84}Na{sub 0.11}H{sub 0.05}ZrSi{sub 6}O{sub 15} {center_dot} 0.91H{sub 2}O [Cmce, a = 14.037(3), b = 14.226(3), and c = 14.552(3) Angstrom-Sign ] and Rb{sub 1.78}Na{sub 0.06}H{sub 0.16}ZrSi{sub 6}O{sub 15} {center_dot} 0.90H{sub 2}O [Cmce, a = 14.2999(12), b = 14.4408(15), and c = 14.7690(12) Angstrom-Sign ], obtained at 150 Degree-Sign C are studied by single-crystal X-ray diffraction and IR spectroscopy. The base of the structures is a heteropolyhedral Zr-Si-O framework whose cavities accommodate Na (K, Rb) cations and H{sub 2}O molecules.

• OSTI ID: 22054262
• Journal Information: Crystallography Reports, Vol. 56, Issue 5; Other Information: Copyright (c) 2011 Pleiades Publishing, Ltd.; Country of input: International Atomic Energy Agency (IAEA); ISSN 1063-7745
• Country of Publication: United States
• Language: English

Related Subjects

75 CONDENSED MATTER PHYSICS
SUPERCONDUCTIVITY AND SUPERFLUIDITY
INFRARED SPECTRA
ION EXCHANGE
MONOCRYSTALS
ORTHORHOMBIC LATTICES
POTASSIUM COMPOUNDS
RUBIDIUM COMPOUNDS
SILICATE MINERALS
SILICATES
SODIUM COMPOUNDS
SPACE GROUPS
TEMPERATURE RANGE 0273-0400 K
TEMPERATURE RANGE 0400-1000 K
WATER
X-RAY DIFFRACTION
ZIRCONIUM COMPOUNDS