The structures of 1-methylpyrrole-2-carboxamide (MPCA) and 1-hydroxypyrrole-2- carboxamide (HPCA) are analyzed, for both structures B3LYP/6-311++ G (d, p) calculations were performed on s-cis and s-trans conformations and on monomeric and dimeric forms of these conformers. N–H⋯ O hydrogen bonds exist for dimers. The X-ray crystal structure of MPCA is also analyzed; centrosymmetric dimers of syn conformers connected through N– ...
