Acta Crystallographica Section B

Structural Science

Volume 63, Part 6 (December 2007)

research papers

Acta Cryst. (2007). B63, 836-842 [ doi:10.1107/S0108768107050550 ]

Temperature dependence of the AV₃O₇ (A = Ca, Sr) structure

S. Prinz, K. M. Sparta and G. Roth

Abstract: The V⁴⁺ (spin ½) oxovanadates AV₃O₇ (A = Ca, Sr) were synthesized and studied by means of single-crystal X-ray diffraction. The room-temperature structures of both compounds are orthorhombic and their respective space groups are Pnma and Pmmn. The previously assumed structure of SrV₃O₇ has been revised and the temperature dependence of both crystal structures in the temperature ranges 297-100 K and 315-100 K, respectively, is discussed for the first time.

Keywords: oxovanadates; temperature dependence; spin 1/2 compounds.


	Structure factor file (CIF format) (16.8 kbytes) [ doi:10.1107/S0108768107050550/bm5051SrV3O7_315Ksup2.fcf ] Contains datablock SrV3O7_315K

	Structure factor file (CIF format) (16.7 kbytes) [ doi:10.1107/S0108768107050550/bm5051SrV3O7_225Ksup3.fcf ] Contains datablock SrV3O7_225K

	Structure factor file (CIF format) (16.8 kbytes) [ doi:10.1107/S0108768107050550/bm5051SrV3O7_200Ksup4.fcf ] Contains datablock SrV3O7_200K

	Structure factor file (CIF format) (16.7 kbytes) [ doi:10.1107/S0108768107050550/bm5051SrV3O7_187Ksup5.fcf ] Contains datablock SrV3O7_187K

	Structure factor file (CIF format) (16.7 kbytes) [ doi:10.1107/S0108768107050550/bm5051SrV3O7_175Ksup6.fcf ] Contains datablock SrV3O7_175K

	Structure factor file (CIF format) (16.7 kbytes) [ doi:10.1107/S0108768107050550/bm5051SrV3O7_150Ksup7.fcf ] Contains datablock SrV3O7_150K

	Structure factor file (CIF format) (16.6 kbytes) [ doi:10.1107/S0108768107050550/bm5051SrV3O7_125Ksup8.fcf ] Contains datablock SrV3O7_125K

	Structure factor file (CIF format) (16.5 kbytes) [ doi:10.1107/S0108768107050550/bm5051SrV3O7_100Ksup9.fcf ] Contains datablock SrV3O7_100K

	Structure factor file (CIF format) (19.4 kbytes) [ doi:10.1107/S0108768107050550/bm5051CaV3O7_297Ksup10.fcf ] Contains datablock CaV3O7_297K

	Structure factor file (CIF format) (20.1 kbytes) [ doi:10.1107/S0108768107050550/bm5051CaV3O7_287Ksup11.fcf ] Contains datablock CaV3O7_287K

	Structure factor file (CIF format) (20.0 kbytes) [ doi:10.1107/S0108768107050550/bm5051CaV3O7_275Ksup12.fcf ] Contains datablock CaV3O7_275K

	Structure factor file (CIF format) (20.1 kbytes) [ doi:10.1107/S0108768107050550/bm5051CaV3O7_262Ksup13.fcf ] Contains datablock CaV3O7_262K

	Structure factor file (CIF format) (20.1 kbytes) [ doi:10.1107/S0108768107050550/bm5051CaV3O7_250Ksup14.fcf ] Contains datablock CaV3O7_250K

	Structure factor file (CIF format) (20.1 kbytes) [ doi:10.1107/S0108768107050550/bm5051CaV3O7_237Ksup15.fcf ] Contains datablock CaV3O7_237K

	Structure factor file (CIF format) (20.1 kbytes) [ doi:10.1107/S0108768107050550/bm5051CaV3O7_225Ksup16.fcf ] Contains datablock CaV3O7_225K

	Structure factor file (CIF format) (20.1 kbytes) [ doi:10.1107/S0108768107050550/bm5051CaV3O7_219Ksup17.fcf ] Contains datablock CaV3O7_219K

	Structure factor file (CIF format) (20.1 kbytes) [ doi:10.1107/S0108768107050550/bm5051CaV3O7_212Ksup18.fcf ] Contains datablock CaV3O7_212K

	Structure factor file (CIF format) (20.1 kbytes) [ doi:10.1107/S0108768107050550/bm5051CaV3O7_206Ksup19.fcf ] Contains datablock CaV3O7_206K

	Structure factor file (CIF format) (20.0 kbytes) [ doi:10.1107/S0108768107050550/bm5051CaV3O7_200Ksup20.fcf ] Contains datablock CaV3O7_200K

	Structure factor file (CIF format) (20.0 kbytes) [ doi:10.1107/S0108768107050550/bm5051CaV3O7_187Ksup21.fcf ] Contains datablock CaV3O7_187K

	Structure factor file (CIF format) (19.9 kbytes) [ doi:10.1107/S0108768107050550/bm5051CaV3O7_175Ksup22.fcf ] Contains datablock CaV3O7_175K

	Structure factor file (CIF format) (19.9 kbytes) [ doi:10.1107/S0108768107050550/bm5051CaV3O7_162Ksup23.fcf ] Contains datablock CaV3O7_162K

	Structure factor file (CIF format) (19.9 kbytes) [ doi:10.1107/S0108768107050550/bm5051CaV3O7_150Ksup24.fcf ] Contains datablock CaV3O7_150K

	Structure factor file (CIF format) (19.9 kbytes) [ doi:10.1107/S0108768107050550/bm5051CaV3O7_137Ksup25.fcf ] Contains datablock CaV3O7_137K

	Structure factor file (CIF format) (19.9 kbytes) [ doi:10.1107/S0108768107050550/bm5051CaV3O7_125Ksup26.fcf ] Contains datablock CaV3O7_125K

	Structure factor file (CIF format) (19.9 kbytes) [ doi:10.1107/S0108768107050550/bm5051CaV3O7_112Ksup27.fcf ] Contains datablock CaV3O7_112K

	Structure factor file (CIF format) (19.9 kbytes) [ doi:10.1107/S0108768107050550/bm5051CaV3O7_100Ksup28.fcf ] Contains datablock CaV3O7_100K

	Structure factor file (CIF format) (16.6 kbytes) [ doi:10.1107/S0108768107050550/bm5051SrV3O7_298Ksup29.fcf ] Contains datablock SrV3O7_298K

	Structure factor file (CIF format) (16.7 kbytes) [ doi:10.1107/S0108768107050550/bm5051SrV3O7_275Ksup30.fcf ] Contains datablock SrV3O7_275K

	Structure factor file (CIF format) (16.7 kbytes) [ doi:10.1107/S0108768107050550/bm5051SrV3O7_262Ksup31.fcf ] Contains datablock SrV3O7_262K

	Structure factor file (CIF format) (16.6 kbytes) [ doi:10.1107/S0108768107050550/bm5051SrV3O7_250Ksup32.fcf ] Contains datablock SrV3O7_250K

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