Crystal structure of 4-[4-(ethoxycarbonyl)piperazin-1-yl]benzoic acid

Acta Crystallographica Section E: Crystallographic Communications

Musheer Ahmad¹  Md. Serajul Haque Faizi²  Irina A. Golenya³ 

[1] Department of Applied Chemistry, Aligarh Muslim University, Aligarh 202 002, India;Department of Chemistry, Indian Institute of Technology Kanpur, Kanpur, UP 208 016, India;Department of Chemistry, Taras Shevchenko National University of Kyiv, 64 Vladimirska Str., Kiev 01601, Ukraine;

关键词: crystal structure;    piperazine;    hydrogen bonds;    carboxylic acids;    4-fluorobenzoic acid;    ethyl 1-piperazinecarboxylate;   

DOI  :  10.1107/S2056989016012482

来源: DOAJ

【 摘 要 】

The asymmetric unit of the title compound, C14H18N2O4, contains two independent molecules (A and B) which have essentially the same conformation. The piperazine rings adopts chair conformations with the N atoms out of plane. The dihedral angles formed by the four approximately planar C atoms of the piperazine ring and the benzene ring is 30.8 (5)° in molecule A and 30.6 (5)° in molecule B. In the crystal, molecules A and B are connected by a pair of O—H...O hydrogen bonds, forming a dimer with graph-set notation R22(8). Weak C—H...O hydrogen bonds connect the dimers, forming zigzag chains along [001].

【 授权许可】

Unknown