2-Amino-5-chloro-pyridinium 3-carb-oxy-4-hy-droxy-benzene-sulfonate.

ABSTRACT: The asymmetric unit of the title salt, C(5)H(6)ClN(2) (+)·C(7)H(5)O(6)S(-), contains two independent 2-amino-5-chloro-pyridinium cations and two independent 3-carb-oxy-4-hy-droxy-benzene-sulfonate anions. In both anions, the O atoms of the sulfonate group are disordered over two sets of positions, with occupancy ratios of 0.47?(5):0.53?(5) and 0.50?(8):0.50?(8). In each anion, an intra-molecular O-H?O hydrogen bond generating an S(6) motif is observed. In the crystal structure, the cations and anions are linked via N-H?O, O-H?O and C-H?O hydrogen bonds, forming a two-dimensional network parallel to (110). The structure is further stabilized by ?-? inter-actions between cations and anions [centroid-centroid distance = 3.5454?(12)?Å]. The crystal studied was a non-merohedral twin, with a ratio of the twin components of 0.715?(3):0.285?(3).

SUBMITTER: Hemamalini M 

PROVIDER: S-EPMC3008044 | biostudies-literature | 2010 Aug

REPOSITORIES: biostudies-literature