INTERMOLECULAR HYDROGEN-BONDED STRUCTURE OF BIS(4-METHOXYPHENYLMETHINE)CARBONO-HYDRAZIDE

The first reported X-ray crystal structure of a carbazone is described. [For a discussion of CAS/IUPAC nomenclature of carbazones see Grasselli & Weast (1989). In Handbook of Data on Organic Compounds, 2nd edition, Vol. I, Introduction, sectional sign seclection sign 190, 252. Florida: CRC Press.] Crystalline 1,5-bis(4-methoxyphenylmethine)carbonohydrazide, (I), C17H18N4O3, exists as a non-centrosymmetric infinite hydrogen-bonded chain in which both amidic H atoms of one molecule are tightly hydrogen bonded to the carbonyl O atom of another molecule, forming intermolecular six-membered ring linkages. The intermolecular hydrogen-bond distances for N-H...O are 1.91 angstrom for H...O and 2.759 (5) angstrom for N...O, and the N-H...O angles are 148.0-degrees.