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Ethyl (Z)-2-chloro-2-(2-phenyl-hydrazin-1-yl-idene)acetate.

ABSTRACT: The title compound, C(10)H(11)ClN(2)O(2), features an almost planar C(ar)-N(H)-N=C(Cl) unit [torsion angle = 0.8 (1)° whose phenyl substituent is almost coplanar with it [dihedral angle = 2.8 (2)°]; this unit is slightly twisted with respect to the carboxyl -CO(2) fragment [dihedral angle = 10.3 (2)°]. In the crystal, the amino group acts as a hydrogen-bond donor to the carbonyl O atom of an adjacent mol-ecule; the hydrogen bond generates a helical chain that runs along the b axis of the monoclinic unit cell.

SUBMITTER: Asiri AM

PROVIDER: S-EPMC3007979 | biostudies-literature | 2010 Aug

REPOSITORIES: biostudies-literature

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Ethyl (Z)-2-chloro-2-(2-phenyl-hydrazin-1-yl-idene)acetate.

Asiri Abdullah M AM Zayed Mohie E M ME Ng Seik Weng SW

Acta crystallographica. Section E, Structure reports online 20100821 Pt 9

The title compound, C(10)H(11)ClN(2)O(2), features an almost planar C(ar)-N(H)-N=C(Cl) unit [torsion angle = 0.8 (1)° whose phenyl substituent is almost coplanar with it [dihedral angle = 2.8 (2)°]; this unit is slightly twisted with respect to the carboxyl -CO(2) fragment [dihedral angle = 10.3 (2)°]. In the crystal, the amino group acts as a hydrogen-bond donor to the carbonyl O atom of an adjacent mol-ecule; the hydrogen bond generates a helical chain that runs along the b axis of the monocli ...[more]

PMID: 21588713

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Ethyl 2-chloro-[2-(4-chloro-phen-yl)hydrazin-1-yl-idene]acetate.

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Ethyl (Z)-2-chloro-2-[2-(4-meth-oxy-phenyl)hydrazin-1-yl-idene]acetate.

Project description:The mol-ecule of the title compound, C11H13ClN2O3, is planar (r.m.s. deviation = 0.0587 Å for non-H atoms) and adopts a Z conformation about the C=N double bond. In the crystal, mol-ecules are linked via an N-H⋯O hydrogen bond, forming zigzag chains propagating along [010]. These chains are consolidated by C-H⋯O hydrogen bonds.

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3-Chloro-6-[(E)-2-(1-phenyl-ethyl-idene)hydrazin-yl]pyridazine.

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Ethyl 2-[(Z)-2-benzyl-hydrazin-1-yl-idene]-2-bromo-acetate.

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3-(2-Ethyl-2-phenyl-hydrazin-1-yl-idene)indolin-2-one.

Project description:In the title compound, C16H15N3O, the dihedral angle between the indole ring system (r.m.s. deviation = 0.020 Å) and the phenyl ring is 14.49 (9)°. The mol-ecular conformation is supported by an intra-molecular C-H⋯O inter-action, which closes an S(7) ring. In the crystal, inversion dimers linked by pairs of N-H⋯O hydrogen bonds generate R2(2)(8) loops.

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Ethyl (3E)-3-[2-(4-bromo-phenyl-sulfon-yl)hydrazin-1-yl-idene]butano-ate.

Project description:The asymmetric unit of title compound, C(12)H(15)BrN(2)O(4)S, contains two mol-ecules (A and B), with slightly different conformations: the bromo-phenyl rings and the SO(2) planes of the sulfonyl groups are oriented at dihedral angles of 50.2 (2) (mol-ecule A) and 58.24 (7)° (mol-ecule B), and the ethyl acetate groups make dihedral angles of 63.99 (19)° (A) and 65.35 (16)° (B) with their bromo-phenyl groups. In the crystal, both mol-ecules exist as inversion dimers linked by pairs of N-H⋯O hydrogen bonds, which generate R(2) (2)(14) loops. The dimers are linked by C-H⋯O inter-actions.

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1-Chloro-1-[(Z)-2-phenyl-hydrazin-1-yl-idene]propan-2-one.

Project description:The title compound, C(9)H(9)ClN(2)O, is close to planar (r.m.s. deviation for the non-H atoms = 0.0446 Å); it exists in a cis conformation with respect to the C=N double bond. In the crystal, the ketone O atom accepts both N-H⋯O and C-H⋯O hydrogen bonds, which leads to [010] infinite chains incorporating R(2) (1)(6) loops. The crystal structure also features a C-H⋯π inter-action.

| S-EPMC3394046 | biostudies-literature

Crystal structure of 4-{(E)-[2-(pyridin-4-ylcarbon-yl)hydrazin-1-yl-idene]meth-yl}phenyl acetate monohydrate.

Project description:The asymmetric unit of the title compound, C15H13N3O3·H2O, comprises a 4-{(E)-[2-(pyridin-4-ylcarbon-yl)hydrazinyl-idene]meth-yl}phenyl acetate mol-ecule and a solvent water mol-ecule linked by O-H⋯O and O-H⋯N hydrogen bonds from the water mol-ecule and a C-H⋯O contact from the organic mol-ecule. The compound adopts an E conformation with respect to the azomethine bond and the dihedral angle between the pyridine and benzene rings is 21.90 (7)°. The azomethine bond [1.275 (2) Å] distance is very close to the formal C=N bond length, which confirms the azomethine bond formation. An extensive set of O-H⋯O, O-H⋯N, N-H⋯O and C-H⋯O hydrogen bonds builds a two-dimensional network progressing along the c axis.

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1-Ethyl-4-[1-(1-phenyl-ethyl-idene)hydrazin-2-yl-idene]-3,4-dihydro-1H-2λ(6),1-benzothia-zine-2,2-dione.

Project description:In the title compound, C(18)H(19)N(3)O(2)S, the thia-zine ring adopts an envelope conformation, with the S atom displaced by 0.732 (1) Å from the other atoms of the ring. The phenyl ring is oriented at a dihedral angle of 79.33 (7)° with respect to the fused benzene ring. The conformations about the two double bonds in the R(2)C=N-N=C(CH(3))Ar grouping are Z and E, respectively. In the crystal, inversion dimers linked by pairs of C-H⋯O inter-actions generate R(2) (2)(8) and R(2) (2)(12) loops, as parts of infinite chains along the a-axis direction.

| S-EPMC3379482 | biostudies-literature

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