Strontium-copper selenite-chlorides: Synthesis and structural investigation

Journal Article · Tue Sep 15 00:00:00 EDT 2009 · Journal of Solid State Chemistry

DOI:https://doi.org/10.1016/j.jssc.2009.06.020· OSTI ID:21370566

Olenev, Andrei V; Dolgikh, Valery A ^[1]

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1. Department of Chemistry, Moscow State University, 119991 GSP-1, Leninskie Gory, 1 build. 3, Moscow (Russian Federation)

Two new complex selenite-chlorides of strontium and copper Sr{sub 2}Cu(SeO{sub 3}){sub 2}Cl{sub 2} (I) and SrCu{sub 2}(SeO{sub 3}){sub 2}Cl{sub 2} (II) were obtained and characterized by X-ray diffraction technique, DTA and IR spectroscopy. Both compounds crystallize in the monoclinic system I: Sp. gr. P2{sub 1}/n, a=5.22996(3) A, b=6.50528(4) A, c=12.34518(7) A, beta=91.3643(2){sup o}, Z=2; II: Sp. gr. P2{sub 1}, a=7.1630(14) A, b=7.2070(14) A, c=8.0430(16) A, beta=95.92(3){sup o}, Z=2. Comparison of the crystal structure of (I) with the structures of Sr{sub 2}M(SeO{sub 3}){sub 2}Cl{sub 2} (M=Co, Ni) was performed. The substitution of strontium atom in the structure of (I) by Cu{sup 2+} ion with a 3d{sup 9} Jahn-Teller distorted surrounding leads to the lowering of the structure symmetry and to the appearance of the noncentrosymmetric structure of (II). The noncentrosymmetric character of the structure of (II) was confirmed by SHG signal (1.2 units relative to an alpha-quartz powder sample). - Graphical abstract: Sr{sub 2}Cu(SeO{sub 3}){sub 2}Cl{sub 2} and SrCu{sub 2}(SeO{sub 3}){sub 2}Cl{sub 2} were obtained and characterized by X-ray diffraction technique, DTA and IR spectroscopy.

• OSTI ID: 21370566
• Journal Information: Journal of Solid State Chemistry, Vol. 182, Issue 9; Other Information: DOI: 10.1016/j.jssc.2009.06.020; PII: S0022-4596(09)00279-5; Copyright (c) 2009 Elsevier Science B.V., Amsterdam, The Netherlands, All rights reserved.; ISSN 0022-4596
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
37 INORGANIC
ORGANIC
PHYSICAL AND ANALYTICAL CHEMISTRY
CHLORIDES
COPPER COMPOUNDS
COPPER IONS
DIFFERENTIAL THERMAL ANALYSIS
INFRARED SPECTRA
JAHN-TELLER EFFECT
MONOCLINIC LATTICES
SELENITES
STRONTIUM COMPOUNDS
SYNTHESIS
X-RAY DIFFRACTION
ALKALINE EARTH METAL COMPOUNDS
CHARGED PARTICLES
CHLORINE COMPOUNDS
COHERENT SCATTERING
CRYSTAL LATTICES
CRYSTAL STRUCTURE
DIFFRACTION
HALIDES
HALOGEN COMPOUNDS
IONS
OXYGEN COMPOUNDS
SCATTERING
SELENIUM COMPOUNDS
SPECTRA
THERMAL ANALYSIS
TRANSITION ELEMENT COMPOUNDS