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Crystal structure of a calcium sulfate-urea complex

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Abstract

The crystal structure of CaSO4 · 4(CH4N2) has been determined from 2695 x-ray intensities measured on a diffractometer, and refined anisotropically to anR-factor of 0.059. The pseudotetragonal crystals contain linear chains of CaSO4 which strongly resemble those in other CaSO4 phases. A common dodecahedral coordination of calcium ions in all these phases is demonstrated, and its implications in the conversion from one phase to another is discussed.

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Authors and Affiliations

  1. National Institute for Metallurgy, Research Groups for Applied Mineralogy and Structural Chemistry, Rand Afrikaans University, P.O. Box 524, Johannesburg

    J. P. R. De Villiers & J. C. A. Boeyens

Authors
  1. J. P. R. De Villiers
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  2. J. C. A. Boeyens
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De Villiers, J.P.R., Boeyens, J.C.A. Crystal structure of a calcium sulfate-urea complex. Journal of Crystal and Molecular Structure 5, 215–226 (1975). https://doi.org/10.1007/BF01303081

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  • DOI: https://doi.org/10.1007/BF01303081

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