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N'-(2-Methoxy-benzyl-idene)nicotinohydrazide.

ABSTRACT: The title compound, C(14)H(13)N(3)O(2), was prepared by the reaction of 2-methoxy-benzyaldehyde with nicotinic acid hydrazide in methanol. The dihedral angle between the benzene and pyridine rings is 5.9?(3)°. In the crystal structure, mol-ecules are linked by inter-molecular N-H?O hydrogen bonds, leading to the formation of chains along the c axis; adjacent chains are linked via C-H?O and C-H?N hydrogen bonds.

SUBMITTER: Wang P

PROVIDER: S-EPMC2983706 | biostudies-literature | 2010 Feb

REPOSITORIES: biostudies-literature

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N'-(2-Methoxy-benzyl-idene)nicotinohydrazide.

Wang Ping P Li Cong C Su Yong-Qing YQ

Acta crystallographica. Section E, Structure reports online 20100206 Pt 3

The title compound, C(14)H(13)N(3)O(2), was prepared by the reaction of 2-methoxy-benzyaldehyde with nicotinic acid hydrazide in methanol. The dihedral angle between the benzene and pyridine rings is 5.9 (3)°. In the crystal structure, mol-ecules are linked by inter-molecular N-H⋯O hydrogen bonds, leading to the formation of chains along the c axis; adjacent chains are linked via C-H⋯O and C-H⋯N hydrogen bonds. ...[more]

PMID: 21580313

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N'-(3-Bromo-4-methoxy-benzyl-idene)nicotinohydrazide monohydrate.

Project description:In the title compound, C(14)H(12)BrN(3)O(2)·H(2)O, the benzene ring is oriented at a dihedral angle of 39.66 (11)° with respect to the pyridine ring. The solvent water mol-ecule links with the organic compound via O-H⋯O, O-H⋯N and N-H⋯O hydrogen bonding.

| S-EPMC2969945 | biostudies-literature

catena-Poly[[[[N'-(4-cyano-benzyl-idene)nicotinohydrazide]silver(I)]-?-[N'-4-cyano-benzyl-idene)nicotinohydrazide]] hexa-fluoridoarsenate].

Project description:In the title compound, {[Ag(C(14)H(10)N(4)O)(2)]AsF(6)}(n), the Ag(I) ion is coordinated by two N atoms from two different pyridyl rings and one N atom from one carbonitrile group of three different N'-(4-cyano-benzyl-idene)nicotinohydrazide ligands in a distorted T-shaped geometry. The Ag-N(carbonitrile) bond distance is significant longer than those of Ag-N(pyrid-yl). The bond angles around the Ag(I) atom are also not in line with those in an ideal T-shaped geometry. One type of ligand acts as the bridge that connects Ag(I) atoms into chains along [01]. These chains are linked to each other via N-H?O hydrogen bonds and Ag?O inter-actions with an Ag?O separation of 2.869?(2)?Å. In addition, the [AsF(6)](-) counter-anions are linked to the hydrazone groups through N-H?F hydrogen bonds. Four of the F atoms of the [AsF(6)](-) anion are disordered over two sets of sites with occupancies of 0.732?(9) and 0.268?(9).

| S-EPMC2977146 | biostudies-literature

catena-Poly[[[N'-(4-cyano-benzyl-idene)nicotinohydrazide)silver(I)]-μ-N'-(4-cyano-benzyl-idene)nicotinohydrazide] hexa-fluorido-phosphate].

Project description:In the title polymer, {[Ag(C(14)H(10)N(4)O)(2)]PF(6)}(n), each Ag(I) ion is coordinated by two N atoms from two pyridyl rings of independent N'-(4-cyano-benzyl-idene)nicotinohydrazide ligands, and one N atom from one carbonitrile group of a symmetry-related ligand in a distorted T-shaped geometry. The ligands exhibit two modes of coordination. One acts as a bridge connecting Ag atoms to form one-dimensional chains along [01]. The other acts as a terminal monodentate ligand, coordinating to Ag through its pyridyl N atom. Two neighbouring anti-parallel chains in the crystal are connected through N-H⋯O hydrogen bonds. Other adjacent chains are packed via Ag⋯O inter-actions, with Ag⋯O separations of 2.876 (2) Å. In addition, PF(6) (-) counter-anions inter-act with the hydrazone groups through N-H⋯F hydrogen bonds. The PF(6) (-) anion is disordered over two sites, with occupancies of 0.773 (8) and 0.227 (8).

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N'-(5-Chloro-2-hydroxy-benzyl-idene)nicotinohydrazide.

Project description:There are two independent Schiff base mol-ecules in the asymmetric unit of the title compound, C(13)H(10)ClN(3)O(2). The dihedral angles between the benzene and pyridine rings are 12.8?(2) and 1.9?(2)° in the two mol-ecules. Intra-molecular O-H?N hydrogen bonds are observed. Mol-ecules are linked into centrosymmetric R(4) (4)(26) motifs by N-H?O and N-H?N inter-actions.

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(E)-N'-(3,5-Dibromo-2-hydroxy-benzyl-idene)nicotinohydrazide.

Project description:In the title Schiff base compound, C(13)H(9)Br(2)N(3)O(2), there is an intra-molecular O-H?N hydrogen bond involving the hydroxyl substituent and the adjacent hydrazine N atom. The mol-ecule is almost planar, the dihedral angle between the benzene ring and the pyridine ring being 5.7?(2)°. In the crystal structure, symmetry-related mol-ecules are linked via N-H?O hydrogen bonds, forming chains propagating in [001].

| S-EPMC2983678 | biostudies-literature

(E)-N'-(3,4-Di-meth-oxy-benzyl-idene)nicotinohydrazide monohydrate.

Project description:In the title hydrated compound, C15H15N3O3·H2O, the nicotinohydrazide mol-ecule adopts a trans conformation with respect to the C=N double bond. The dihedral angle between the benzene and pyridine rings is 5.10?(14)°. In the crystal, the solvent water mol-ecule acts as an acceptor, forming an N-H?O hydrogen bond supported by two C-H?O contacts. It also acts as a donor, forming bifurcated O-H?(O,O) and O-H?N hydrogen bonds that combine with the former contacts to form zigzag chains of mol-ecules along the c-axis direction. An additional O-H?O donor contact completes a set of six hydrogen bonds to and from the water mol-ecule and connects it to a third nicotinohydrazide mol-ecule. This latter contact combines with weaker C-H?O hydrogen bonds supported by a C-H?? contact to stack mol-ecules along b in a three-dimensional network.

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(E)-6-Chloro-N'-(3,5-dichloro-2-hydroxy-benzyl-idene)-nicotinohydrazide.

Project description:The title Schiff base compound, C(13)H(8)Cl(3)N(3)O(2), was synthesized by the condensation reaction of 3,5-dichloro-salicyl-aldehyde with 6-chloro-nicotinic acid hydrazide in 95% ethanol. The mol-ecule is nearly planar, with a dihedral angle of 1.9 (2)° between the aromatic ring planes, and an intra-molecular O-H⋯N hydrogen bond is observed. In the crystal, the mol-ecules are connected by inter-molecular N-H⋯O hydrogen bonds into infinite chains propagating in [100].

| S-EPMC2968879 | 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'-(4-Methoxy-benzyl-idene)benzohydrazide.

Project description:In the title mol-ecule, C(15)H(14)N(2)O(2), the dihedral angle between the benzene rings is 5.93?(17)°. In the crystal, inter-molecular N-H?O hydrogen bonds link the mol-ecules into chains propagating in [010].

| S-EPMC2972045 | biostudies-literature

N'-(2-Hydr-oxy-4-methoxy-benzyl-idene)-4-methoxy-benzohydrazide.

Project description:In the title compound, C(16)H(16)N(2)O(4), the dihedral angle between the two benzene rings is 8.7?(2)°. The mol-ecule adopts an E configuration about the C=N bond, with an intra-molecular O-H?N hydrogen bond involving the hydr-oxy substituent and the hydrazide N atom. In the crystal structure, adjacent mol-ecules are linked through inter-molecular N-H?O hydrogen bonds, forming chains propagating in the b-axis direction.

| S-EPMC2970121 | biostudies-literature

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