On Two Glycine Zinc Sulfate Phases with Exotic Cation Coordination Geometries

Two hitherto hardly characterized glycine zinc sulfates were identified in the product of a batch production process for glycine zinc sulfates of the BASF Company: Gly·ZnSO4·2H2O and β‐Gly‐ZnSO4. The crystal structures were solved from high resolution synchrotron X‐ray powder diffraction data. Gly·Z...

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Bibliographic Details
Published in:Zeitschrift für anorganische und allgemeine Chemie (1950) 2017-12, Vol.643 (23), p.1855-1860
Main Authors: Bette, Sebastian, Hinrichsen, Bernd, Dinnebier, Robert E.
Format: Article
Language:English
Subjects:
Batch production
Cations
Coordination compounds
Copper compounds
Crystal structure
Diffraction
Glycine
Glycine zinc sulfates
Pyramids
Rietveld refinement
Structure elucidation
Sulfates
X ray powder diffraction
Zinc
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Summary:Two hitherto hardly characterized glycine zinc sulfates were identified in the product of a batch production process for glycine zinc sulfates of the BASF Company: Gly·ZnSO4·2H2O and β‐Gly‐ZnSO4. The crystal structures were solved from high resolution synchrotron X‐ray powder diffraction data. Gly·ZnSO4·2H2O is the zinc analogue to an isotypic copper compound with space group P21/c (no. 14) and a = 7.8092(1) Å, b = 12.3979(2) Å, c = 8.3732(1) Å, β = 90.673(1) and V = 810.62(2) ų. The crystal structure of the hitherto unknown β‐Gly‐ZnSO4 with space group P21/c (no. 14) and a = 9.2577(1) Å, b = 5.1268(1) Å, c = 12.9926(1) Å, β = 90.267(1) and V = 616.65(1) Å3 was solved ab initio. In both crystal structures the zinc cations exhibit exotic, fivefold coordination arrangements: squared ZnO5‐pyramids are present in the structure of the dihydrate, whereas the crystal structure of β‐Gly‐ZnSO4 contains trigonal ZnO5‐bipyramids.
ISSN:0044-2313
1521-3749
DOI:10.1002/zaac.201700217