1-(2,3-Dihydroxypropyl)-4-{2-[4-(dimethylamino)phenyl]vinyl}pyridinium chloride

The title compound, C 18 H 23 N 2 O 2 + ·Cl − , crystallizes with two independent cations and anions per cell. Each cation has twofold rotational disorder about the linking vinyl groups but with unequal occupancies [0.963 (5):0.037 (5) and 0.860 (8):0.140 (8)]. The two independent cations are close to being related by an inversion centre but the data does not support the expected centrosymmetric space-group assignment. The conclusion is that the differing rotational disorder has lead to an overall non-centrosymmetric lattice. In the crystal, the molecules pack in layers parallel to (133) and (-13-3), chain-linked with motif C 1 2 (7) by the dihydroxypropyl O–H...Cl...H–O hydrogen bonds. Other lattice binding is provided by O—H...Cl, C—H...Cl and C—H...N interactions.

Abstract licence: CC BY

1. 10.

   Structure validation in chemical crystallography · 2009

2. 11.

   Use of intensity quotients and differences in absolute structure refinement · 2013

9 more references, whose wording the paper’s licence keeps private.

A person counts once a day per paper. We keep no cookie and no address: a reader is a hash that changes every day. Any month under five reads shows no number.