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Nicotinohydrazide.

ABSTRACT: IN THE TITLE COMPOUND (ALTERNATIVE NAME: pyridine-3-carbo-hydrazide, C(6)H(7)N(3)O), the asymmetric unit contains a single mol-ecule. In contrast with nicotinic acid and nicotinamide, the C=O bond is found to be oriented cis with respect to the C(ipso) C N fragment in the pyridine ring. The pyridine ring and the hydrazide group make a dihedral angle of 34.0?(2)°. In the crystal structure, mol-ecules are associated into a three-dimensional framework by a combination of N-H?N and three-centre N-H?O hydrogen bonds.

SUBMITTER: Portalone G

PROVIDER: S-EPMC2915352 | biostudies-literature | 2007 Dec

REPOSITORIES: biostudies-literature

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Nicotinohydrazide.

Portalone Gustavo G Colapietro Marcello M

Acta crystallographica. Section E, Structure reports online 20071218 Pt 1

IN THE TITLE COMPOUND (ALTERNATIVE NAME: pyridine-3-carbo-hydrazide, C(6)H(7)N(3)O), the asymmetric unit contains a single mol-ecule. In contrast with nicotinic acid and nicotinamide, the C=O bond is found to be oriented cis with respect to the C(ipso) C N fragment in the pyridine ring. The pyridine ring and the hydrazide group make a dihedral angle of 34.0 (2)°. In the crystal structure, mol-ecules are associated into a three-dimensional framework by a combination of N-H⋯N and three-centre N-H⋯ ...[more]

PMID: 21200868

Similar Datasets

Nicotinohydrazide.

Project description:The title mol-ecule (alternative name: pyridine-3-carbohydrazide; C(6)H(7)N(3)O) was obtained from the reaction of ethyl nicotinate with hydrazine hydrate in methanol. In the amide group, the C-N bond is relatively short, suggesting some degree of electronic delocalization in the mol-ecule. The stabilized conformation may be compared with those of isomeric compounds picolinohydrazide (pyridine-2-carbohydrazide) and isonicotinohydrazide (pyridine-4-carbohydrazide). In the title isomer, the pyridine ring forms an angle of 33.79 (9)° with the plane of the non-H atoms of the hydrazide group. This lack of coplanarity between the hydrazide functionality and the pyridine ring is considerably greater than that observed in isonicotinohydrazide (dihedral angle = 17.14°), while picolinohydrazide is almost fully planar. The title isomer forms inter-molecular N-H⋯O and N-H⋯N hydrogen bonds, which stabilize the crystal structure.

| S-EPMC2915351 | biostudies-literature

N'-(2-Furylmethyl-ene)nicotinohydrazide.

Project description:The asymmetric unit of the title compound, C(11)H(9)N(3)O(2), contains two independent mol-ecules: the dihedral angles between the pyridine ring and the furyl ring are 17.00?(16) and 34.12?(15)°. The crystal structure involves inter-molecular C-H?O, N-H?N and N-H?O hydrogen bonds.

| S-EPMC2970065 | biostudies-literature

N'-(Propan-2-yl-idene)nicotinohydrazide.

Project description:Crystals of the title compound, C(9)H(11)N(3)O, were obtained from a condensation reaction of nicotinohydrazide and acetone. In the mol-ecular structure, the pyridine ring is oriented at a dihedral angle of 36.28?(10)° with respect to the amide plane. In the crystal structure, mol-ecules are linked via N-H?O hydrogen bonds, forming chains.

| S-EPMC2970248 | biostudies-literature

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

Project description: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.

| S-EPMC2983706 | 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

N'-(3-Phenyl-allyl-idene)nicotinohydrazide monohydrate.

Project description:In the title compound, C(15)H(13)N(3)O·H(2)O, the dihedral angle between the pyridine and phenyl rings is 35.45 (7)°. Inter-molecular O-H⋯O, O-H⋯N, N-H⋯O and C-H⋯O hydrogen bonds are found in the crystal structure. In addition, C-H⋯π inter-actions involving the pyridine and phenyl rings are also found.

| S-EPMC2970972 | 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).

| S-EPMC2959965 | biostudies-literature

Form II of adipic acid-nicotinohydrazide (1/2).

Project description:The crystal structure of the title co-crystal, 2C(6)H(7)N(3)O·C(6)H(10)O(4), is a second polymorph, designated form II, of the co-crystal formed between the two mol-ecules [Lemmerer et al. (2011 ?). CrystEngComm, 13, 55-59]. The asymmetric unit comprises one mol-ecule of nicotinic acid hydrazide, and one half-mol-ecule of adipic acid (the entire mol-ecule is completed by the application of a centre of inversion). In the crystal, mol-ecules assemble into a three-dimensional network of hydrogen bonds, formed by three N-H?O hydrogen bonds and one O-H?N hydrogen bond. The O-H?N hydrogen bond formed between the carboxyl group and the pyridine ring is supported by a C-H?O hydrogen bond.

| S-EPMC3254528 | biostudies-literature

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.

| S-EPMC2969359 | biostudies-literature

(E)-N'-[(2-Hydroxynaphthalen-1-yl)methylidene]nicotinohydrazide.

Project description:In the mol-ecule of the title compound, C(17)H(13)N(3)O(2), the naphthyl ring system and the pyridine ring form a dihedral angle of 12.2 (3)°. An intra-molecular O-H⋯N hydrogen bond generates a six-membered ring with an S(6) ring motif. This also contributes to the relative overall near planarity of the mol-ecule [r.m.s. deviation of all 22 non-H atoms = 0.107 (5) Å]. In the crystal, mol-ecules are linked through inter-molecular N-H⋯N hydrogen bonds, forming chains along the a axis.

| S-EPMC3151953 | biostudies-literature

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