7-Chloro-2,4-dimethyl-1,8-naphthyridin-1-ium nitrate

Abstract

In the title compound, C10H10ClN2+·NO3−, the naphthyridinium cations and nitrate anions form cation–anion pairs via a strong N—H⋯O hydrogen bond.

Crystal and Molecular Structures of Three Organic Salts from Nevirapine

“…The dihedral angles between the two pyridine rings attached to the azepine ring and the azepine ring(°) 26 The trichloroacetate associated with the cation via the N-HÁÁÁO hydrogen bond with N-O distance of 2.604(7) Å , CH-O association between the CH at the cyclopropyl unit and the O atom of the carboxylate that has a N-HÁÁÁO hydrogen bond with C-O distance of 3.057(2) Å , and CH-O association between the CH at the protonated pyridine and the other O atom of the carboxylate with C-O distance of 3.170(3) Å to form a heteroadduct. In the heteroadduct there existed the close-joint R 2 2 (7), and R 2 1 (7) motifs.…”

“…The binary organic salt of the organic acid and nevirapine may display the different hydrogen-bonding patterns of the different acceptor or donor atoms. As an extension of our study of weak interactions (hydrogen bonding, p-p interaction, and halogen bonding) concerning the aromatic N-containing derivatives [23][24][25][26], herein we report the preparation and structures of three organic salts assembled from nevirapine (L), and the organic acids (Scheme 1), i.e. …”

4-(3-Carboxyphenyl)pyridinium nitrate

“…For structures of similar compounds, see: Jin et al (2003); Bei et al (2004); Rademeyer (2005); Wang (2006); Yu et al (2006). T = 293 K 0.15 Â 0.13 Â 0.10 mm…”