Abstract
Triglycine sulfate (TGS) and its analogs can be presented by the molecular structure AH(A⋯AH)Y, where A is an amino acid (glycine in TGS) in zwitter-ionic form, AH is a protonated cationic amino acid, (A⋯AH) is a dimeric cation, where A and AH are connected by a short hydrogen bond, and Y is a divalent anion. Doing research on amino acid hexafluorosilicates we obtained a series of salts with different compositions, including four hexafluorosilicate salts which chemically are analogs of triglycine sulfate. Those are GlyH(Gly⋯GlyH)SiF6 (I), SarH(Sar⋯SarH)SiF6·2H2O (II), l-AlaH(l-Ala⋯l-AlaH)SiF6·H2O (III) and l-ProH(l-Pro⋯l-ProH)SiF6·H2O (IV). We have already published our results on crystals (II) and (III). In this work we report our results on the crystals (I) and (IV).
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