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About the crystalline structure of vanadates Ca1.5±0.1Mn0.5±0.1V2O7 and Ca1.5Cd0.5V2O7

Published online by Cambridge University Press:  19 September 2018

V.D. Zhuravlev Open the ORCID record for V.D. Zhuravlev [Opens in a new window] ,
A.P. Tyutyunnik ,
A.Yu. Chufarov ,
N.I. Lobachevskaja ,
Yu. A. Velikodnyi  and
L.V. Ermakova
V.D. Zhuravlev*
Affiliation:
Ural Division, Russian Academy of Sciences, Institute of Solid-State Chemistry, Pervomaiskaya ul. 91, Yekaterinburg 620219, Russia
A.P. Tyutyunnik
Affiliation:
Ural Division, Russian Academy of Sciences, Institute of Solid-State Chemistry, Pervomaiskaya ul. 91, Yekaterinburg 620219, Russia
A.Yu. Chufarov
Affiliation:
Ural Division, Russian Academy of Sciences, Institute of Solid-State Chemistry, Pervomaiskaya ul. 91, Yekaterinburg 620219, Russia
N.I. Lobachevskaja
Affiliation:
Ural Division, Russian Academy of Sciences, Institute of Solid-State Chemistry, Pervomaiskaya ul. 91, Yekaterinburg 620219, Russia
Yu. A. Velikodnyi
Affiliation:
Faculty of Chemistry, Moscow State University, Moscow 119992, Russia
L.V. Ermakova
Affiliation:
Ural Division, Russian Academy of Sciences, Institute of Solid-State Chemistry, Pervomaiskaya ul. 91, Yekaterinburg 620219, Russia
*
a)Author to whom correspondence should be addressed. Electronic mail: [email protected]
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Abstract

The crystal structures of Ca1.5Mn0.5V2O7 (I) and Ca1.5Cd0.5V2O7 (II) synthesized by the citrate method and by a conventional solid-state reaction, respectively, were determined using X-ray powder diffraction data. It was found that the compound I has a monoclinic crystal structure a = 4.88563(9) Å, b = 11.21279(22) Å, c = 5.69643(11 Å), β = 96.376(7)°, V = 310.132(10) Å3 (space group P21/c), Z = 2). Compound I has a narrow homogeneity region Ca1.5±0.1Mn0.5±0.1V2O7. The vanadate Ca1.5Cd0.5V2O7 crystallizes in the triclinic system with the parameters a = 6.66139(6) Å, b = 6.93019(7) Å, c = 7.02211(6) Å, α = 85.4404(9)°, β = 63.7505(7)°, γ = 82.5515(10)° и V = 288.201(5) Å3 (space group P$\bar 1$, Z = 2). It is one of the formulations of the primary solid solution, formed as a result of the substitution of part of the calcium cations for cadmium cations in Ca2V2O7.

Keywords

vanadatesX-ray powder diffractioncrystal structuresolid solution
Type
New Diffraction Data
Information
Powder Diffraction , Volume 33 , Issue 3 , September 2018 , pp. 246 - 255
Copyright
Copyright © International Centre for Diffraction Data 2018 

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