Abstract
The title mol-ecular salt, C8H13N2 (+)·Br(-), crystallizes with two independent 3-amino-pyridinium cations and two bromide anions in the asymmetric unit (Z' = 2). In the pyridine ring, the N atom is alkyl-ated by a propyl group. The dihedral angle between the mean planes of the pyridinium ring and the propyl group is 84.84 (2)° in cation A, whereas the corresponding angle is 89.23 (2)° in cation B. In the crystal, the anions and cations are linked via N-H⋯Br and C-H⋯Br hydrogen bonds, forming chains propagating along [100].
Highlights
The N atom is alkylated by a propyl group
Aminopyridinium and 1-alkyl-aminopyridinium salts display a wide range of antimicrobial activity (Sundararaman et al, 2013; Ilangovan et al, 2012)
The amino group in the pyridinium ring participates through hydrogen bonds with wool proteins (Zhao & Sun, 2007; Calas et al, 2007)
Summary
Supporting information: this article has supporting information at journals.iucr.org/e. Aminopyridinium and 1-alkyl-aminopyridinium salts display a wide range of antimicrobial activity (Sundararaman et al., 2013; Ilangovan et al, 2012). They have found many applications such as surfactants (Gama et al, 1981), ionic liquids (Muldoon et al, 2010; Petkovic et al, 2011), liquid-crystal display mediums (Ezaki & Kokeguchi, 2006), ionic crystals for second-order non-linear optics (Anwar et al, 2001), phasetransfer catalysts in organic transformations (Kupetis et al., 2002) and additives for protein refolding processes (Yamamoto et al, 2011). The amino group in the pyridinium ring participates through hydrogen bonds with wool proteins (Zhao & Sun, 2007; Calas et al, 2007)
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