Supramolecular structures of 1-phenylethylammonium tartrates.

The structures of six 1-phenylethylammonium tartrates have been determined and in each of them a distinctive hydrogenbonded anion substructure can be identified. (S)-l-Phenylethylammonium (R,R)-hydrogen tartrate [(I), P21, Z'= 1] contains anion sheets built from a single type of R44(22) ring with cations pendent, via three N-H…O hydrogen bonds, from just one face of the sheet. (S)-l-Phenylethylammonium rac-hydrogen tartrate [(II), P21, Z' = 2] and its enantiomorph (R)-l-phenylethylammonium rac-hydrogen tartrate [(III), P21, Z'= 2] contain anion sheets built from four types of ring, R2²(10), R2²(12), R24(14) and R44(20), and there are cations pendent from both faces of the sheet. The anion substructure in bis[(S)-l-phenylethylammonium] (R,R)-tartrate [(IV), P21, Z' = 1] consists of simple C(5) chains, which are linked into sheets by the cations, while in bis(rac-l-phenylethylammonium) (R,R)-tartrate [(V), P21, Z' = 2] there are anion sheets containing two distinct types of R44(22) ring, with equal numbers of (R) and (S) cations pendent from each face of the anion sheet. Bis[(R)-l-phenylethylammonium] rac-tartrate methanol hemisolvate [(VI), P1, Z' = 4, with 14 independent components in the asymmetric unit] contains anion sheets built from two types of R2²(12) ring and two types of R66(32) ring; half of the cations and half of the methanol molecules are pendent from each face of the sheet. [ABSTRACT FROM AUTHOR]