Synthesis, crystal structure and vibrational spectra of KCrV2O7 and RbCrV2O7 / Tyutyunnik Alexander P.,Zubkov Vladimir G.,Tarakina Nadezhda V.,Krasil'nikov Vladimir N.,Perelyaeva Lina A.,Baklanova Inna V.,Svensson Gunnar // SOLID STATE SCIENCES. - 2006. - V. 8, l. 11. - P. 1344-1352.

ISSN/EISSN:

1293-2558 / нет данных

Type:

Article

Abstract:

KCrV2O7 and RbCrV2O7 have been synthesized and their crystal structures have been determined using X-ray and neutron powder diffraction techniques. The phases crystallizes in space group P2/c with unit cell parameters for KCrV2O7: a = 7.9526(l) angstrom, b = 4.87543(5) angstrom, c = 6.89 10(1) angstrom and beta =101. 162(1)degrees and RbCrV2O7: a = 8.2361 (1) angstrom, b = 4.89480(4) angstrom, c = 6.8980(l) angstrom and beta = 100.893 (1)degrees. The unit cell was confirmed by selected area electron diffraction studies. The crystal structure consists of two-dimensional CrV2O7- slabs parallel to the (100)-plane, formed from zigzag chains of face- and edge-sharing VO6 octahedra connected through CrO6-octahedra. The VO6 Octahedra are very distorted including a short VO-vanadyl unit. The alkaline metal ions placed in the inter-slab space have coordination number 10+2 forming distorted triangular orthobicupolas. The infrared and Raman spectra of the compounds are presented and discussed. (c) 2006 Elsevier Masson SAS. All rights reserved.

Author keywords:

oxovanadates; crystal structure; Raman spectra; IR-spectra; solid state chemistry; electron diffraction; powder diffraction RAMAN-SPECTROSCOPY; DISTANCES; CR2O3

DOI:

10.1016/j.solidstatesciences.2

Web of Science ID:

ISI:000242535700010

Соавторы в МНС:

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Другие поля

Поле	Значение
Month	NOV
Publisher	ELSEVIER SCIENCE BV
Address	PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS
Language	English
Keywords-Plus	RAMAN-SPECTROSCOPY; DISTANCES; CR2O3
Research-Areas	Chemistry; Physics
Web-of-Science-Categories	Chemistry, Inorganic \& Nuclear; Chemistry, Physical; Physics, Condensed Matter
Author-Email	gunnar@struc.su.se
ResearcherID-Numbers	Tyutyunnik, Alexander/P-2230-2015 Tarakina, Nadezda/A-7870-2013
ORCID-Numbers	Tarakina, Nadezda/0000-0002-2365-861X
Number-of-Cited-References	27
Usage-Count-Since-2013	8
Journal-ISO	Solid State Sci.
Doc-Delivery-Number	112OM