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2-{(E)-1-[2-(4-Nitro-phen-yl)hydrazin-1-yl-idene]eth-yl}benzene-1,3-diol.

ABSTRACT: The title compound, C(14)H(13)N(3)O(4), is close to planar, the dihedral angle between the terminal benzene rings being 5.80?(16)°; the nitro group is coplanar with the benzene ring to which it is bonded [O-N-C-C torsion angle = -177.3?(3)°]. The hy-droxy group forms an intra-molecular hydrogen bond with the imine N atom, and the conformation about the imine bond is E. In the crystal, layers in the (101) plane with an undulating topology are formed by O-H?O and N-H?O hydrogen bonds along with C-H?O inter-actions. Centrosymmetrically related layers are connected via ?-? inter-actions [ring centroid-centroid distance = 3.5739?(19)?Å] into double layers.

SUBMITTER: Howie RA

PROVIDER: S-EPMC3295468 | biostudies-literature | 2012 Mar

REPOSITORIES: biostudies-literature

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2-{(E)-1-[2-(4-Nitro-phen-yl)hydrazin-1-yl-idene]eth-yl}benzene-1,3-diol.

Howie R Alan RA Wardell James L JL Wardell Solange M S V SM Tiekink Edward R T ER

Acta crystallographica. Section E, Structure reports online 20120210 Pt 3

The title compound, C(14)H(13)N(3)O(4), is close to planar, the dihedral angle between the terminal benzene rings being 5.80 (16)°; the nitro group is coplanar with the benzene ring to which it is bonded [O-N-C-C torsion angle = -177.3 (3)°]. The hy-droxy group forms an intra-molecular hydrogen bond with the imine N atom, and the conformation about the imine bond is E. In the crystal, layers in the (101) plane with an undulating topology are formed by O-H⋯O and N-H⋯O hydrogen bonds along with C- ...[more]

PMID: 22412579

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2-{(E)-1-[2-(2-Nitro-phen-yl)hydrazin-1-yl-idene]eth-yl}benzene-1,3-diol mono-hydrate.

Project description:The hydrazone mol-ecule in title monohydrate, C(14)H(13)N(3)O(4)·H(2)O, is almost coplanar, the dihedral angle between the terminal benzene rings being 3.22?(15)°; the nitro group is coplanar with the benzene ring to which it is bonded [O-N-C-C = -2.8?(4)°]. The hy-droxy group forms an intra-molecular hydrogen bond with the imine N atom, and the conformation about the imine bond [1.305?(3)?Å] is E. In the crystal, supra-molecular layers in the (203) plane are connected into a double layer via water-nitro O-H?O hydrogen bonds, along with ?-? inter-actions [ring centroid-centroid distance = 3.7859?(19)?Å].

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Project description:In the title mol-ecule, C(14)H(11)BrClNO(2), the dihedral angle between the mean planes of the bromo-substitued benzene and the chloro-substituted benzene rings is 1.8?(4) °. The nitro group is twisted by 15.8?(6)° from the mean plane of the benzene ring to which it is attached. The crystal packing is influenced by weak inter-molecular C-H?O inter-actions and weak ?-? stacking inter-actions [centroid-centroid distances = 3.903?(2), 3.596?(2) and 3.903?(2)?Å].

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Crystal structure of 4-((1E)-1-{(2Z)-2-[4-(4-bromo-phen-yl)-3-phenyl-2,3-di-hydro-1,3-thia-zol-2-yl-idene]hydrazin-1-yl-idene}eth-yl)phenol hemihydrate.

Project description:In the title compound, C23H18BrN3OS·0.5H2O, the bromo-phenyl, phenyl and phenol rings make dihedral angles of 46.5?(1), 66.78?(8) and 15.4?(2)°, respectively, with the mean squares plane of the thia-zol-idene ring. In the crystal, the lattice water mol-ecule is hydrogen bonded to the phenol group and makes a weaker O-H?N connection to an inversion-related mol-ecule, forming a ring while weak pairwise C-H?S inter-actions involving inversion-related mol-ecules form a second ring. Both these motifs result in the formation of two-dimensional networks lying parallel to (10-1).

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Crystal structure and Hirshfeld surface analysis of ethane-1,2-diaminium 3-[2-(1,3-dioxo-1,3-di-phenyl-propan-2-yl-idene)hydrazin-yl]-5-nitro-2-oxido-benzene-sulfonate dihydrate.

Project description:In the anion of the title hydrated salt, C2H10N22+·C21H13N3O8S2-·2H2O, the planes of the phenyl rings and the benzene ring of the 5-nitro-2-oxido-benzene-sulfonate group are inclined to one another by 44.42?(11), 56.87?(11) and 77.70?(12)°. In the crystal, the anions are linked to the cations and the water mol-ecules by N-H?O and O-H?O hydrogen bonds, forming a three-dimensional network. Furthermore, there are face-to-face ?-? stacking inter-actions between the centroids of one phenyl ring and the benzene ring of the 5-nitro-2-oxido-benzene-sulfonate group [centroid-centroid distance = 3.8382?(13)?Å and slippage = 1.841?Å]. A Hirshfeld surface analysis was conducted to verify the contributions of the different inter-molecular inter-actions.

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N,N'-Bis(3-nitro-benzyl-idene)-2,2'-[2-(3-nitro-phen-yl)imidazolidine-1,3-di-yl]diethanamine.

Project description:The title compound, C(27)H(27)N(7)O(6), a Schiff base, was synthesized by the reaction of triethyl-enetetra-mine with 3-nitro-benzealdehyde. There are two independent mol-ecules in the asymmetric unit. The central aromatic ring in one mol-ecule makes dihedral angles of 23.99?(7) and 20.06?(6)° with the two terminal rings; for the second mol-ecule, these angles are 26.14?(6) and 24.64?(6)°.

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(Z)-1-(2-Chloro-phen-yl)-3-methyl-4-[2-(4-nitro-phen-yl)hydrazin-1-yl-idene]-1H-pyrazol-5(4H)-one.

Project description:There are two independent mol-ecules, A and B, in the asymmetric unit of the title compound, C(16)H(12)ClN(5)O(3). The relative orientations of the chloro-phenyl ring with respect to the pyrazole ring in the two crystallographically independent mol-ecules are different, and their corresponding dihedral angles are -53.3?(2) and 114.09?(18)° in mol-ecules A and B, respectively. There are two strong intramolecular N-H?O hydrogen bonds, and two weak intramolecular C-H?O and C-H?Cl hydrogen bonds. The crystal packing is constructed by weak C-H?O and N-H?O inter-actions, and two ?-? stacking inter-actions [centroid-centroid distances = 3.7894?(9) and 3.5719?(10)?Å], forming a mol-ecular ladder along the a axis.

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Crystal structure of (<i>N</i>,<i>N</i>'-ethyl-enebis{3-[2-(3-nitro-phen-yl)hydrazin-1-yl-idene]-4-oxo-pentan-2-iminato})copper(II)-3-[2-(3-nitro-phen-yl)hydrazin-1-yl-idene]pentane-2,4-dione (1/1).

Project description:In the title 1:1 co-crystal, [Cu(C24H24N8O6)]·C11H11N3O4, each of the crystal components forms undulating layers which stack alternately along the b-axis direction. Mol-ecules of the CuII complex are connected via C-H⋯O hydrogen bonds involving the nitro and keto oxygen atoms, thus forming supra-molecular networks. Mol-ecules of the aryl-hydrazone component are linked by C-H⋯O inter-actions into zigzag strands showing no inter-strand association.

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