Crystal structure of 2,6-dimethyl-4-pyridone hemihydrate

Abstract

The title compound (systematic name: 2,6-dimethyl-1H-pyridin-4-one hemihydrate), C7H9NO·0.5H2O, has a single planar mol­ecule in the asymmetric unit with the non-H atoms possessing a mean deviation from planarity of 0.021 Å. There is also half of a water mol­ecule present in the asymmetric unit. In the crystal, infinite (001) sheets are formed by N—H⋯O and O—H⋯O hydrogen bonds.

Approaching the isotropic spin-ladder regime: structure and magnetism of all-pyrazine-bridged copper(ii)-based antiferromagnetic ladders

“…The O14/O24–C14/C24 bonds are short (shown in Table 3) indicating significant double bond character and thus the 3-Cl-4-HOpy molecule exists as the pyridone tautomer. 45–47 Weak hydrogen bonding between the substituted pyridone ligands, N11–H11 and N21–H21, to the semi-coordinate and disordered perchlorate ion is observed.…”