Two di-alkyl-ammonium salts of 2-amino-4-nitro-benzoic acid: crystal structures and Hirshfeld surface analysis.

ABSTRACT: The crystal structures of two ammonium salts of 2-amino-4-nitro-benzoic acid are described, namely di-methyl-aza-nium 2-amino-4-nitro-benzoate, C₂H₈N⁺·C₇H₅N₂O₄^-, (I), and di-butyl-aza-nium 2-amino-4-nitro-benzoate, C₈H₂₀N⁺·C₇H₅N₂O₄^-, (II). The asymmetric unit of (I) comprises a single cation and a single anion. In the anion, small twists are noted for the carboxyl-ate and nitro groups from the ring to which they are connected, as indicated by the dihedral angles of 11.45 (13) and 3.71 (15)°, respectively; the dihedral angle between the substituents is 7.9 (2)°. The asymmetric unit of (II) comprises two independent pa

SUBMITTER: Wardell JL 

PROVIDER: S-EPMC5137589 | biostudies-literature | 2016 Dec

REPOSITORIES: biostudies-literature