Serkan Soylu

3‐[(2,4‐Di­nitro­phenyl)­hydrazono]­butan‐2‐one oxime

# 2004 International Union of Crystallography Printed in Great Britain ± all rights reserved The title compound, C10H11N5O5, contains of dinitrophenyl, monooxime and hydrazone groups. The molecules are linked through OÐH N and CÐH O hydrogen bonds. There are also ± interactions and intramolecular hydrogen bonds. All these hydrogen bonds are highly effective in forming dimeric chains, thereby stabilizing the crystal structure. The monooxime and hydrazone groups both have an E con®guration.

Diacetatobis(2-amino­benzothia­zole-κN)cobalt(II)

The title complex, [Co(C 2 H 3 O 2 ) 2 (C 7 H 6 N 2 S) 2 ], contains a Co centre with a slightly distorted tetrahedral coordination geometry, involving two acetate ligands and two N atoms from the thiazole moiety [Co-O = 2.0025 (14) and 1.9953 (16) A, and Co-N = 2.0524 (18) and 2.0568 (18) A]. The interplanar angle between the two benzothiazole moieties is 77.86 (3) . The amine groups, acting as donors, participate in intra- and intermolecular N-H...O hydrogen bonds, with N...O distances in the range 2.806 (2)-2.857 (2) A.

Synthesis, Crystal Structure, Spectroscopic and Thermal Properties of a Novel Mixed Ligand Copper(II) Complex with 5,5-Dimethylhydantoin and Benzylamine

Abstract The crystal structure of the newly synthesized complex, trans-aqua-bis(benzylamino)-bis(5,5-dimethylhydantoinato) copper(II) was determined by X-Ray single crystal data. The thermal analyses, FT-IR and magnetic susceptibility data are also presented. The complex crystallizes in the monoclinic system, space group C2. The complex features a distorted square pyramidal [CuN4O] coordination with 5,5-dimethylhydantoinato, benzylamine and water ligands. The 5,5-dimethylhydantoinato anion is bonded to the copper(II) ion via its deprotonated N atom in the 3-position.

2,6-Dimethyl-4-(phenyldiazenyl)phenol.

The crystal structure of the title compound, C14H14N2O, determined at 293 K, shows that the molecule is approximately planar in the solid state and that the aromatic rings have a trans configuration with respect to the azo double bond, as found for other diazene derivatives. The packing can be described as a polymeric arrangement of molecules linked through O-H...N and C-H...O hydrogen bonds and close contacts. These intermolecular interactions result in the formation of infinite chains parallel to the b axis.

N-(3-Chloro-4-methoxy­phenyl)-N′-hydro­xy-2-oxo-2-phenyl­acet­amidine

The title compound, C15H13N2O3Cl, consists of two aromatic groups linked through the C=N—OH monoxime group. Intermolecular O—H⋯N, N—H⋯Cl hydrogen bonds [O⋯N 2.773 (2), N⋯Cl 3.719 (2) A] are highly effective in forming polymeric chains, thereby stabilizing the crystal structure. The compound has an E configuration.

N1-(4-Bromophenyl)-N2-hydroxy-2-oxo-2-phenylacetamidine.

In the title compound, C14H11BrN2O2, which has the oxime group in an E conformation, molecules are linked by strong O-H...O and N-H...O hydrogen bonds into chains of edge-fused rings, unlike closely related compounds.

N1-(2,6-Dimethylphenyl)-N2-hydroxy-α-oxo-α-phenylacetamidine

The structure of the title compound, C(16)H(16)N(2)O(2), consists of a dimeric arrangement around an inversion centre of acetamidine molecules linked via O-H.N hydrogen bonds. There are also H.pi-ring interactions. All these interactions result in the formation of infinite chains parallel to the (101) axis. The oxime group has an E conformation.

2-[benzoyl(hydroxyimino)methylamino]benzoic acid.

The structure of the title compound, C(15)H(12)N(2)O(4), consists of a polymeric arrangement, around inversion centres, of molecules linked through O-H.N and O-H.O hydrogen bonds; there are also intramolecular hydrogen bonds. All these hydrogen-bond interactions result in the formation of infinite chains parallel to the [010] direction. The oxime group has an E conformation.

N1-(4-tert-Butylphenyl)-N2-hydroxy-alpha-oxo-alpha-phenylacetamidine and N2-hydroxy-N1-(4-nitrophenyl)-alpha-oxo-alpha-phenylacetamidine hemihydrate.

In the title compounds, C18H20N2O2, (I), and C14H11N3O4.0.5H2O, (II), respectively, the oxime groups have an E configuration. In (I), the molecules exist as polymers bound by intermolecular C-H...O and O-H...N hydrogen bonds around inversion centres. In (II), intermolecular OW-H...N, OW-H...O and O-H...OW interactions stabilize the molecular packing.

N1-(4-tert-Butyl­phenyl)-N2-hydroxy-α-oxo-α-phenyl­acet­amidine and N2-hydroxy-N1-(4-nitro­phenyl)-α-oxo-α-phenyl­acet­amidine hemihydrate

In the title compounds, C18H20N2O2, (I), and C14H11N3O4.0.5H2O, (II), respectively, the oxime groups have an E configuration. In (I), the molecules exist as polymers bound by intermolecular C-H...O and O-H...N hydrogen bonds around inversion centres. In (II), intermolecular OW-H...N, OW-H...O and O-H...OW interactions stabilize the molecular packing.