Crystal Structure Determination and Hydrogen-Bonding Patterns in 2-Pyridinecarboxamide

Abstract

The title compound, 2-pyridinecarboxamide, C 6 H 6 N 2 O, crystallize in the monoclinic system with space group P2 1 /n (N˚14), Z = 4, and unit cell parameters a = 5.2074(1) Å, b = 7.1004(1) Å, c = 16.2531(3) Å,  = 100.260(1)˚. The crystal structure of the title compound, was reported previously from Weissenberg photographic data with R = 0.127. It has now been redetermined, providing a significant increase in the precision of the derived geometric parameters. The crystal packing is governed by N-H···O hydrogen bond-type intermolecular interactions, forming infinite one-dimensional chains with graph-set notation C(4), R 2 2 (8) and R 2 4 (8).