2-Amino-pyridinium 2-meth-oxy-carbonyl-4,6-dinitro-phenolate.

ABSTRACT: In the title mol-ecular salt, C(5)H(7)N(2) (+)·C(8)H(5)N(2)O(7) (-), the 2-amino-pyridinium cation is essentially planar, with a maximium deviation of 0.015?(1)?Å, while the 2-meth-oxy-carbonyl-4,6-dinitro-phenolate anion is slightly twisted away from planarity, with a maximium deviation of 0.187?(1)?Å. Deprotonation of the hy-droxy O atom was observed. The cation and anion are connected by four bifurcated N-H?(O,O) hydrogen bonds, forming a mol-ecular proton-transfer adduct. The dihedral angle between the pyridinium ring in the cation and the benzene ring in the anion is 3.65?(6)°. Every adduct connects to six neighboring adducts by N-H?O and C-H?O hydrogen bonds, yielding extended layers parallel to the bc plane. There is a weak ?-? inter-action between the benzene rings of two neighboring anions; the inter-planar spacing and the centroid-centroid separation are 3.309?(1) and 3.69?(1)?Å, respectively.

SUBMITTER: Wu DL 

PROVIDER: S-EPMC3254471 | biostudies-literature | 2012 Jan

REPOSITORIES: biostudies-literature