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N'-(4-Bromo-benzyl-idene)isonicotino-hydrazide.

ABSTRACT: The title compound, C(13)H(10)BrN(3)O, was prepared by the reaction of isonicotinohydrazide and 4-bromo-benzaldehyde. The dihedral angle between the benzene and pyridine rings is 8.60 (12)°. The crystal packing is stabilized by inter-molecular C-H⋯O and N-H⋯O hydogen-bonding inter-actions.

SUBMITTER: Li LM

PROVIDER: S-EPMC2959976 | biostudies-literature |

REPOSITORIES: biostudies-literature

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Bis[N'-(3-cyano-benzyl-idene)isonicotino-hydrazide]silver(I) trifluoro-acetate.

Project description:In the title compound, [Ag(C(14)H(10)N(4)O)(2)]CF(3)CO(2), the Ag(I) ion is coordinated by two N atoms of the pyridine rings of two N'-(3-cyano-benzyl-idene)isonicotinohydrazide ligands in a nearly linear geometry. In the crystal structure, a combination of close contacts formed via Ag?N inter-actions [Ag?N = 3.098?(2) and 3.261?(2)?Å] from symmetry-related mol-ecules and inter-molecular N-H?O hydrogen bonds between CF(3)CO(2) (-) anions and the hydrazone groups of two ligands give rise to chains. Furthermore, there are Ag?O inter-actions with a separation of 2.765?(2)?Å between chains. The F atoms of the CF(3)CO(2) (-) anion are disordered over two sites with refined occupancies of 0.593?(5) and 0.407?(5).

| S-EPMC2970130 | biostudies-literature

Bis[N'-(3-cyano-benzyl-idene)isonicotino-hydrazide-?N]silver(I) trifluoro-methane-sulfonate.

Project description:In the title compound, [Ag(C(14)H(10)N(4)O)(2)]CF(3)SO(3), two N atoms from two independent pyridyl rings of two N'-3-cyano-benzyl-ideneisonicotinohydrazide ligands coordinate to the unique Ag(I) ion, forming a nearly linear coordination geometry. Adjacent silver complexes are primarily linked together by Ag?N inter-actions, with Ag?N separations of 2.877?(2) and 3.314?(2)?Å. On the other hand, one CF(3)SO(3) (-) anion inter-acts with hydrazone groups of two neighbouring ligands via N-H?O hydrogen bonds. These weak inter-molecular inter-actions contribute to the formation of supra-molecular chains. In addition, there are Ag?O inter-actions [2.787?(2)?Å] between Ag and O atoms from adjacent chains.

| S-EPMC2971296 | biostudies-literature

N'-(3-Phenyl-allyl-idene)isonicotino-hydrazide.

Project description:The asymmetric unit of the title compound, C(15)H(13)N(3)O, contains two similar mol-ecules. Each mol-ecule is non-planar, as indicated by the dihedral angles between the pyridine and benzene rings of 45.2?(2) and 56.6?(2)°. The crystal structure is consolidated by inter-molecular N-H?O hydrogen bonds.

| S-EPMC2960596 | biostudies-literature

N'-(4-Bromo-phenyl-sulfon-yl)isonicotino-hydrazide.

Project description:The title compound, C(12)H(10)BrN(3)O(3)S, crystallizes with two crystallographically independent mol-ecules in the asymmetric unit. The dihedral angles between the two six-membered rings in the mol-ecules are 34.1?(3) and 45.1?(2)°. In the crystal structure, mol-ecules are connected via N-H?O and N-H?N hydrogen bonding.

| S-EPMC2977211 | biostudies-literature

(E)-N'-(5-Bromo-2-hy-droxy-benzyl-idene)-2-(4-isobutyl-phen-yl)propano-hydrazide.

Project description:The title compound, C(20)H(23)BrN(2)O(2), containing an ibuprofen core, crystallizes with three independent mol-ecules of similar conformation in the asymmetric unit. In these three mol-ecules, the two benzene rings make dihedral angles of 82.7?(2), 71.2?(2) and 78.0?(3)° with respect to each other. The atoms of the isobutyl groups in two of the mol-ecules are disordered over two positions, with site-occupancy ratios of 0.516?(8):0.484?(8) and 0.580?(8):0.420?(8). In the crystal, mol-ecules are linked by N-H?O, C-H?O and O-H?N hydrogen bonds. Furthermore, C-H?? inter-actions are also observed.

| S-EPMC3414297 | biostudies-literature

N'-(3-Bromo-5-chloro-2-hy-droxy-benzyl-idene)-2H-1,3-benzodioxole-5-carbo-hydrazide.

Project description:The asymmetric unit of the title hydrazone compound, C(15)H(10)BrClN(2)O(4), contains two independent mol-ecules. The dihedral angles between the benzene rings are 38.7?(3)° in one mol-ecule and 24.3?(3)° in the other. Both mol-ecules exist in trans conformations with respect to the C=N double bonds of the central methyl-idene units. Intra-molecular O-H?N contacts are observed in both mol-ecules, forming S(6) rings. In the crystal, mol-ecules are linked through N-H?O hydrogen bonds into chains along the a axis.

| S-EPMC3344473 | biostudies-literature

N'-(2-Chloro-benzyl-idene)benzo-hydrazide.

Project description:The asymmetric unit of the title compound, C(14)H(11)ClN(2)O, contains two independent mol-ecules. In one mol-ecule, the two aromatic rings form a dihedral angle of 45.94?(16)°, while in the second mol-ecule this angle is 58.48?(16)°. In the crystal, inter-molecular N-H?O hydrogen bonds link the mol-ecules into two crystallographically independent sets of chains propagating along [001].

| S-EPMC2971129 | biostudies-literature

N'-(3,4-Dimethoxy-benzyl-idene)aceto-hydrazide.

Project description:The asymmetric unit of the title compound, C(11)H(14)N(2)O(3), contains two independent mol-ecules with close conformations; the C=N-N-C torsion angle is 176.4?(1)° in both mol-ecules. In the crystal, inter-molecular N-H?O and C-H?O hydrogen bonds link the mol-ecules into chains running along the [01] direction.

| S-EPMC2977217 | biostudies-literature

N'-(3-Methoxy-benzyl-idene)aceto-hydrazide.

Project description:In the title mol-ecule, C(10)H(12)N(2)O(2), the acetohydrazide group is planar within 0.012?(1)?Å and forms a dihedral angle of 5.25?(8)° with the benzene ring. The meth-oxy group is coplanar with the attached benzene ring [C-O-C-C = 0.1?(2)°]. The mol-ecule adopts a trans configuration with respect to the C=N double bond. In the crystal, mol-ecules are linked into centrosymmetric dimers by N-H?O hydrogen bonds and these dimers are linked into a ribbon-like structure along [110] by C-H?O hydrogen bonds. In addition, an inter-molecular C-H?? inter-action is observed.

| S-EPMC2977277 | biostudies-literature

(E)-N'-(5-Bromo-2-hy-droxy-3-meth-oxy-benzyl-idene)-1H-indole-3-carbo-hydrazide.

Project description:There are three independent mol-eculesi n the asymmetric unit of the title compound, C(18)H(16)BrN(3)O(3), in which the dihedral angles between the indole and benzene rings are 76.9?(2), 4.9?(2), and 70.9?(2)°. All three mol-ecules exist in a trans configuration with respect to the methyl-idene units. In each mol-ecule, there is one intra-molecular O-H?N hydrogen bond. In the crystal, N-H?O hydrogen bonds occur.

| S-EPMC3201537 | biostudies-literature

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