Abstract
The asymmetric unit of the title compound is composed of two independent ion pairs of 4-(di-methyl-amino)-pyridin-1-ium 8-hy-droxy-quinoline-5-sulfonate (HDMAP+·HqSA-, C7H11N2 +·C9H6NO4S-) and neutral N,N-di-methyl-pyridin-4-amine mol-ecules (DMAP, C7H10N2), co-crystallized as a 1:1:1 HDMAP+:HqSA-:DMAP adduct in the monoclinic system, space group Pc. The compound has a layered structure, including cation layers of HDMAP+ with DMAP and anion layers of HqSA- in the crystal. In the cation layer, there are inter-molecular N-H⋯N hydrogen bonds between the protonated HDMAP+ mol-ecule and the neutral DMAP mol-ecule. In the anion layer, each HqSA- is surrounded by other six HqSA-, where the planar network structure is formed by inter-molecular O-H⋯O and C-H⋯O hydrogen bonds. The cation and anion layers are linked by inter-molecular C-H⋯O hydrogen bonds and C-H⋯π inter-actions.
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Schedule a callMore From: Acta crystallographica. Section E, Crystallographic communications
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