Enrofloxacinium oxalate.

ABSTRACT: The title salt, 2C19H23FN3O3 (+)·C2O4 (2-) {systematic name: bis-[4-(3-carb-oxy-1-cyclo-propyl-6-fluoro-4-oxo-1,4-di-hydro-quino-lin-7-yl)-1-ethyl-piperazin-1-ium] oxalate}, crystallizes with two independent monocations (A and B) and an oxalate dianion (C) in the asymmetric unit. The piperazinium ring in both the cations adopts a slightly disordered chair conformation. The dihedral angles between the mean planes of the cyclo-propyl ring and the 10-membered quinoline ring are 50.6 (5)° (A) and 62.2 (5)° (B). In each of the cations, a single O-H⋯O intra-molecular hydrogen bond is observed. In the crystal, the oxalate anions inter-act with the cations through N-H⋯O hydrogen bonds and weak C-H⋯O inter-actions, forming R 2 (2)(8) graph-set ring motifs. Weak C-H⋯F inter-actions along with furthe

SUBMITTER: Yamuna TS 

PROVIDER: S-EPMC3998349 | biostudies-literature | 2014 Feb

REPOSITORIES: biostudies-literature