S. Long, M. Siegler, Tonglei Li
2007
Citations
0
Influential Citations
9
Citations
Journal
Acta Crystallographica Section E-structure Reports Online
Abstract
The title compound, C6H4ClNO2, forms centrosymmetric dimers via intermolecular hydrogen bonds between carboxylic groups. Weak Cl⋯Cl interactions further bridge these dimers, leading to infinite chains. In contrast, acid-to-pyridine hydrogen-bonded catemer motifs are observed in both nicotinic acid and 2-chloronicotinic acid. Only intramolecular halogen-bonded S(5) loops exist in 2-chloronicotinic acid.