ABSTRACT: In the title compound, C(20)H(16)N(2)O(2), intra-molecular N-H⋯O and inter-molecular O-H⋯O hydrogen bonds are found. The inter-molecular hydrogen bonds link the mol-ecules into an infinite chain along the c axis. The dihedral angles between the aromatic rings are 16.9 (3), 80.8 (3) and 64.6 (3)°
Project description:The title compound, C(20)H(16)N(2)O(2), was synthesized by the reaction of 2-hydroxy-benzohydrazide with diphenyl-methanone. The dihedral angle between the phenyl rings is 76.28?(11)°. The amino H atom is involved in an intra-molecular N-H?O hydrogen bond. In the crystal structure, the hydr-oxy groups and carbonyl O atoms form inter-molecular O-H?O hydrogen bonds, which link the mol-ecules into chains running along the b axis.
Project description:In the title compound, C(12)H(10)N(2)O(2), the dihedral angle between the benzene and furan rings is 52.54?(7)°. In the crystal, inter-molecular N-H?O hydrogen bonds and C-H?? inter-actions link the mol-ecules.
Project description:In the mol-ecule of the title compound, C(14)H(12)N(2)O(4), the two benzene rings make a dihedral angle of 84.53 (8)°. O-H⋯O and N-H⋯O hydrogen bonds link adjacent mol-ecules into a layer structure.
Project description:In the title mol-ecule, C(13)H(16)N(2)O(2), the cyclo-hexyl-idene ring adopts a chair conformation. The intra-molecular N-H⋯O hydrogen bond influences the mol-ecular conformation: the benzene ring and the mean plane of the central C(O)NHN fragment form a dihedral angle of 4.9 (1) Å. In the crystal, inter-molecular O-H⋯O hydrogen bonds link the mol-ecules into chains propagated along [001].
Project description:In the title Schiff base, C(18)H(14)N(4)O, the amido -NH- unit is connected to one of the two pyridyl N atoms at an N(-H)?N distance of 2.624?(2)?Å. The mol-ecular packing features an inter-molecular C-H?N R(2) (2)(6) hydrogen-bonding ring motif.
Project description:The Schiff base, C(20)H(14)BrClN(2)O(2), displays a trans conformation with respect to the C=N double bond. The aromatic rings at either end of the -C(=O)-NH-N=C- fragment are nearly parallel [dihedral angle = 3.4?(5)°]. The hydr-oxy group forms an intra-molecular hydrogen bond to the imino N atom.
Project description:The title Schiff base compound, C(19)H(16)N(2)O(3), was derived from the condensation reaction of 2-hydr-oxy-1-naphthyl-aldehyde with 4-methoxy-benzohydrazide. The dihedral angle between the benzene ring and the naphthyl ring system is 6.8 (2)°. In the crystal structure, mol-ecules are linked through inter-molecular N-H⋯O inter-molecular hydrogen bonds, forming chains running along the c axis.
Project description:In the title compound, C(18)H(22)N(4)O, the C=N and C-N bond lengths in the CN(3) unit are 1.3179?(11), 1.3551?(11) and 1.3737?(11)?Å, indicating double- and single-bond character, respectively. The N-C-N angles are 115.91?(8), 118.20?(8) and 125.69?(8), showing a deviation of the CN(3) plane from an ideal trigonal-planar geometry. The bonds between the N atoms and the terminal C-methyl groups all have values close to a typical single bond [1.4529?(12)-1.4624?(12)?Å]. The dihedral angle between the phenyl rings is 79.63?(4)°. In the crystal, the mol-ecules are connected via weak C-H?O hydrogen bonds, generating chains along [100].
Project description:In the title compound, C(18)H(14)N(2)O(2)·H(2)O, the dihedral angle between the benzene ring and the naphthalene system is 5.18 (10)°. Intra-molecular N-H⋯O hydrogen bonds influence the molecular conformation. In the crystal, inter-molecular N-H⋯O and O-H⋯O hydrogen bonds are observed as well as π-π inter-actions between the phenyl ring and the substituted ring of the naphthalene [centroid-centroid distance = 3.676 (11) Å].
Project description:In the title mol-ecule, C(12)H(11)N(3)O(2), the dihedral angle between the mean planes of the naphthalene and carboxamide groups is 28.9 (8)°. The hydrazine N atoms are twisted slightly out of the plane of the carboxamide group [C-C-N-N torsion angle = -175.06 (13)°]. The crystal packing is influenced by N-H⋯O hydrogen bonding which includes a bifurcated hydrogen bond between the amide N atom and nearby carboxyl and hydroxyl O atoms. A second bifurcated hydrogen bond occurs between the hydroxyl O atom and nearby amide (inter-molecular) and hydrazine (intra-molecular) N atoms. As a result, mol-ecules are linked into a co-operative hydrogen-bonded network of infinite one-dimensional O-H⋯O-H⋯O-H chains along the (101) plane of the unit cell in a zigzag pattern, the dihedral angle between the mean planes of the naphthalene groups of adjacent mol-ecules in the chain being 86.9 (2)°. A MOPAC PM3 calculation provides support to these observations.