Abstract
AbstractIn the present paper we report crystal structures of four types ([A(1)H][A(2)H]Y, [A(1)H]3[A(2)H]Y2, A(1)H[A(2)H···A(2)]Y and A(1)H[A(1)H···A(2)]Y) of mixed salts containing the sulfate anion (Y = SO42−) and amino acids A, i.e. sarcosine (Sar), dimethylglycine (DMG), betaine (Bet),β-alanine (β-Ala) and l-proline (l-Pro): (β-AlaH)(DMGH)SO4·2H2O (I), (β-AlaH)(BetH)SO4(II), (β-AlaH)(l-ProH)SO4(III), (BetH)(l-ProH)SO4(IV), (SarH)3(l-ProH)(SO4)2(V), (β-AlaH)(l-ProH···l-Pro)SO4(VI), and (β-AlaH)(β-AlaH···DMG)SO4(VII). The O⋅⋅⋅O distances in dimeric cations (l-ProH···l-Pro) and (β-AlaH···DMG) are 2.450(3) and 2.5295(12) Å in (VI) and (VII), respectively. Crystal structure determinations of (β-AlaH)(BetH)SO4(II) at 100K (P21/n), 200K (Pnma), 250K (Pnma) and room temperature (Pnma) revealed a structural phase transition in the interval between 100K and 200K.
Publisher
Research Square Platform LLC
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