Levvy, G. A. (1948). Biochem. J. 42, 2. Levvy, G. A. (1952). Biochem. J. 52, 464. Levvy, G. A. (1954). Biochem. J. 58, 462. Levvy, G. A. & Marsh, C. A. (1952). Biochem. J. 52, 690. Lohmar, R., Dimler, R. J., Moore, S. & Link, K. P. (1942). J. biol. Chem. 143, 551. Marsh, C. A. (1952). J. chem. Soc. p. 1578. Marsh, C. A. (1954). Biochem. J. 58, 609. Marsh, C. A., Alexander, F. & Levvy, G. A. (19...

In the title compound, C8H9ClN2O, the dihedral angle between the benzene ring and the methyl-amide substituent is 68.39 (11)°. In the crystal, mol-ecules are linked by N-H⋯O hydrogen bonds, forming layers parallel to the ab plane.

In the mononuclear title complex, [HgCl2(C20H21N3)], synthesized from the quinoline-derived Schiff base N (1),N (1)-diethyl-N (4)-(quinolin-2-yl-methyl-idene)benzene-1,4-di-amine (QMBD), the coordination geometry around the Hg(2+) atom is distorted tetra-hedral, comprising two Cl atoms [Hg-Cl = 2.3654 (19) and 2.4394 (18) Å] and two N-atom donors from the QMBD ligand, viz. one imine and quinoli...

The title Schiff base compound, C(14)H(12)N(4)O(3), displays an E conformation with respect to the C=N double bond [1.268 (3) Å]. The dihedral angle between the benzene rings is 3.2 (5)°, consistent with an essentially planar mol-ecule. In the crystal, N-H⋯O and N-H⋯N hydrogen bonds, as well as C-H⋯O inter-actions, link the mol-ecules into layers that stack along the c axis.

In the title compound, C(2)H(7)N(4)O(+)·BF(4) (-), inter-molecular N-H⋯O hydrogen bonds connect the cations into chains parallel to the c axis, with graph-set motif C(4). These chains are in turn connected into a three-dimensional network by inter-molecular N-H⋯F hydrogen bonds. The B-F distances distances in the anion are not equal.