Refinement of the structure of hemimorphite
- 1 June 1967
- journal article
- research article
- Published by Walter de Gruyter GmbH in Zeitschrift für Kristallographie
- Vol. 124 (3) , 180-191
- https://doi.org/10.1524/zkri.1967.124.3.180
Abstract
The structure of hemimorphite, Zn 4 Si 2 O 7 (OH) 2 · H 2 O has been redetermined with three-dimensional data obtained both photographically and with a counter-diffractometer. R values of 7.1% and 4.0% were obtained for the two sets of data. There are no significant differences between the Si–O bond lengths (mean 1.627 Å) and the Si–O–Si angle is 150°. The Zn–O bonds (mean length 1.954Å) show considerable covalent character. Following Z oltai , the structure is described as a three-dimensional framework of tetrahedra. The water molecule shows large thermal vibrations and may be partly disordered.Keywords
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