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

ABSTRACT: The title compound, C(10)H(10)Cl(2)N(2)O(2), features a planar C(ar)-N(H)-N=C(Cl) unit [torsion angle = 5.5 (4)°] whose benzene substituent is coplanar with it [dihedral angle = 4.7 (4)°]; this unit is slightly twisted with respect to the carboxyl -CO(2) fragment [dihedral angle = 2.2 (52)°]. 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 polymer that runs along the b axis of the monoclinic unit cell.

SUBMITTER: Asiri AM

PROVIDER: S-EPMC3007972 | biostudies-literature |

REPOSITORIES: biostudies-literature

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

Project description: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.

| S-EPMC3007979 | biostudies-literature

(Z)-Ethyl 2-chloro-2-[2-(4-methyl-phen-yl)hydrazinyl-idene]acetate.

Project description:The mol-ecule of the title compound, C11H13ClN2O2, is approximately planar (r.m.s. deviation = 0.099?Å for non-H atoms) and adopts a Z conformation about the C=N double bond. In the crystal, mol-ecules are linked by N-H?O and C-H?O hydrogen bonds to the same O-atom acceptor, forming zigzag chains propagating along [010]. These inter-actions give rise to R2(1)(6) loops.

| S-EPMC3589004 | biostudies-literature

Crystal structure of ethyl 2-(2-{(1E)-[(E)-2-(2-hy-droxy-benzyl-idene)hydrazin-1-yl-idene]meth-yl}phen-oxy)acetate.

Project description:In the title compound, C18H18N2O4, the planes of the benzene rings are twisted with respect to each other at 27.25?(7)°. The mol-ecule displays an extended conformation with an intra-molecular O-H?N hydrogen bond. In the crystal, weak C-H?O inter-actions link the mol-ecules, forming supra-molecular chains running along the b-axis direction.

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Project description:In the title compound, C(11)H(13)BrN(2)O(2), the dihedral angle between the phenyl ring and the almost planar (r.m.s. deviation = 0.011 Å) C-C(Br)=N-N(H)- fragment is 74.94 (16)°. In the crystal, mol-ecules are linked by N-H⋯O hydrogen bonds, which generate C(6) chains propagating in [010]. Weak aromatic π-π stacking [centroid-centroid separation = 3.784 (3) Å] may also help to consolidate the packing.

| S-EPMC3007982 | biostudies-literature

(1Z,2E)-N'-{2-Chloro-1-methyl-2-[2-(4-methyl-phen-yl)hydrazin-1-yl-idene]ethyl-idene}-4-meth-oxy-benzohydrazide.

Project description:The asymmetric unit of the title compound, C(18)H(19)ClN(4)O(2), contains two mol-ecules, in which the dihedral angles between the benzene rings are 43.60 (12) and 58.65 (13)°. The hydrazine N atoms are twisted slightly out of the planes of the tolyl and meth-oxy-benzene rings: the C-C-N-N and N-N-C-C torsion angles are 171.1 (2) and -174.4 (2)°, respectively, for one mol-ecule and -177.4 (2) and -170.6 (2)°, respectively, for the other. In the crystal, mol-ecules are linked by N-H⋯O and C-H⋯O hydrogen bonds into chains propagating along the b-axis direction.

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Project description:In the title compound, C(10)H(11)ClN(2)O, the dihedral angle between the acetohydrazide group and the aromatic ring is 33.76?(9)°. In the crystal, inversion dimers linked by pairs of N-H?O hydrogen bonds generate R(2) (2)(8) loops.

| S-EPMC3009114 | biostudies-literature

Dimethyl 2-[2-(2,4,6-tri-chloro-phen-yl)hydrazin-1-yl-idene]butane-dioate.

Project description:In the title compound, C12H11Cl3N2O4, the dihedral angle between the aromatic ring and the hydrazine (NH-N=C) grouping is 52.2?(3)°. The butanedioate groups exhibit planar conformations. An intra-molecular N-H?O hydrogen bond links the N-H group of the hydrazine to one of the meth-oxy groups of the butane-dioate moiety. In the crystal, mol-ecules are linked by C-H?O hydrogen bonds and ?-? inter-actions are also observed [centroid-centroid separation = 3.535?(1)?Å].

| S-EPMC3914063 | biostudies-literature

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.

| S-EPMC3588822 | biostudies-other

Methyl 2-((2Z,5Z)-2-{(E)-2-[1-(4-hy-droxy-phen-yl)ethyl-idene]hydrazin-1-yl-idene}-4-oxo-3-phenyl-1,3-thia-zolidin-5-yl-idene)acetate.

Project description:In the title compound, C20H17N3O4S, all non-H atoms, except those of the phenyl ring, are approximately coplanar [maximum deviation = 0.2214?(1)?Å], and the dihedral angle between their best plane and the benzene ring is 53.13?(1)°. A short intra-molecular O?S contact of 2.838?(1)?Å is formed between the ester carbonyl O atom and the S atom of the thia-zolidine ring. In the crystal, mol-ecules associated via O-H?O, C-H?O and C-H?S hydrogen bonds form layers parallel to (010), with only C-H?O-type short contacts between the mol-ecules in adjacent layers.

| S-EPMC3790417 | biostudies-literature

N'-[(1E)-1-(4-Chloro-phen-yl)ethyl-idene]formohydrazide.

Project description:The structure of the title compound, C(9)H(9)ClN(2)O, consists of centrosymmetric dimers due to inter-molecular N-H?O hydrogen bonding, forming R(2) (2)(8) ring motifs. The dihedral angle between the p-chloro-phenyl unit and the remaining heavy-atom group is 6.77?(17)°.

| S-EPMC2970209 | biostudies-literature

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