Jm. Jethmalani et al., N-(4-BROMOPHENYL)-5,6-DICHLORONICOTINAMIDE AND 6-CHLORO-5-FLUORO-N-(3-PYRIDYL)NICOTINAMIDE, Acta crystallographica. Section C, Crystal structure communications, 52, 1996, pp. 438-441
The title compounds, N-(4-bromophenyl)5,6-dichloronicotinamide, C12H7B
rCl2N2O, and 6-chloro-5-fluoro-N-(3-pyridyl)nicotinamide, C11H7ClFN3O,
crystallize as almost planar molecules held together by intermolecula
r hydrogen bonding. The dichloro compound shows C-Cl distances of 1.69
(2) and 1.725 (15) Angstrom at C6 and C5, respectively. These compoun
ds are representatives of a class of compounds biologically important
as herbicidal, pesticidal or fungicidal agents.