Inter-molecular hydrogen bonding in -methyl-'-(pyridin-2-yl)benzene-1,2-di-amine.

The structure of -methyl-'-(pyridin-2-yl)benzene-1,2-di-amine, CHN, at 123 K has ortho-rhom-bic (2) symmetry. The title compound displays an unexpected proton-splitting pattern when studied by H NMR spectroscopy. The X-ray crystallography analysis determined this to be caused by strong dual N-H⋯N hydrogen bonding.