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Crystal structure of dicalcium chromate hydrate

Published online by Cambridge University Press:  06 March 2012

C. E. Botez ,
P. W. Stephens  and
Oladipo Omotoso
C. E. Botez*
Affiliation:
Department of Physics and Astronomy, State University of New York at Stony Brook, Stony Brook, New York, 11794-3800
P. W. Stephens
Affiliation:
National Synchrotron Light Source, Brookhaven National Laboratory, Upton, New York 11973
Oladipo Omotoso
Affiliation:
Natural Resources Canada, Energy Technology Centre, Devon, Alberta, T9G 1A8, Canada
*
a)Author to whom correspondence should be addressed; Electronic mail: [email protected]
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Abstract

Direct methods and Rietveld analysis were applied to high-resolution synchrotron X-ray powder diffraction data to solve the crystal structure of dicalcium chromate hydrate (Ca2CrO5⋅3H2O). The compound crystallizes in monoclinic symmetry (space group Cm, Z=2), with a=8.23575(5) Å, b=7.90302(4) Å, c=5.20331(3) Å, and β=98.0137(3)°. The structure is built from double-layers of CrO4 tetrahedra and CaO8 polyhedra that run parallel to the (001) plane.

Type
Technical Articles
Information
Powder Diffraction , Volume 19 , Issue 2 , June 2004 , pp. 133 - 136
Copyright
Copyright © Cambridge University Press 2004

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