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On Two Glycine Zinc Sulfate Phases with Exotic Cation Coordination Geometries
Author(s) -
Bette Sebastian,
Hinrichsen Bernd,
Dinnebier Robert E.
Publication year - 2017
Publication title -
zeitschrift für anorganische und allgemeine chemie
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.354
H-Index - 66
eISSN - 1521-3749
pISSN - 0044-2313
DOI - 10.1002/zaac.201700217
Subject(s) - zinc , crystallography , crystal structure , chemistry , glycine , crystal (programming language) , copper , group (periodic table) , inorganic chemistry , amino acid , organic chemistry , biochemistry , computer science , programming language
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 · ZnSO 4 · 2H 2 O and β‐Gly‐ZnSO 4 . The crystal structures were solved from high resolution synchrotron X‐ray powder diffraction data. Gly · ZnSO 4 · 2H 2 O is the zinc analogue to an isotypic copper compound with space group P 2 1 / 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‐ZnSO 4 with space group P 2 1 / 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) Å 3 was solved ab initio. In both crystal structures the zinc cations exhibit exotic, fivefold coordination arrangements: squared ZnO 5 ‐pyramids are present in the structure of the dihydrate, whereas the crystal structure of β‐Gly‐ZnSO 4 contains trigonal ZnO 5 ‐bipyramids.