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{2,2'-[o-Phenyl-enebis(nitrilo-methanylyl-idene)]diphenolato-κO,N,N',O'}nickel(II) monohydrate.

ABSTRACT: The Ni(II) atom in the title monohydrate, [Ni(C(20)H(14)N(2)O(2))]·H(2)O, is coordinated within a cis-N(2)O(2) square-planar donor set provided by the tetra-dentate Schiff base ligand. Overall, the mol-ecule has a curved shape with the dihedral angle formed between the planes of the outer benzene rings being 13.92 (18)°. The water mol-ecule was found to be disordered over two positions [ratio 0.80 (1):0.20 (1)] and the major component is linked to the complex via an O-H⋯O hydrogen bond.

SUBMITTER: Ghaemi A

PROVIDER: S-EPMC3246917 | biostudies-literature |

REPOSITORIES: biostudies-literature

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{4,4'-Dimethyl-2,2'-[(2,2-dimethyl-propane-1,3-di-yl)bis-(nitrilo-methanylyl-idene)]diphenolato}nickel(II) monohydrate.

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Project description:In the title compound, [Cu(C22H24N2O4)]·H2O, the Cu(II) atom is four-coordinated in a distorted planar geometry with a mean deviation of 0.1164?(2)?Å for the plane generated by the ligating atoms of the salen-type Schiff base ligand. In the crystal, O(water)-H?O and C-H?O hydrogen bonds form a three-dimensional-network.

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Project description:In the title complex, [Ni(C(21)H(15)ClN(2)O(2))], the Ni(II) ion is coordinated by two N and two O atoms from the tetra-dentate Schiff base ligand in a distorted square geometry. The crystal packing exhibits short inter-molecular Ni?Ni distances of 3.273?(3)?Å.

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Project description:In the title complex, [Ni(C(20)H(14)N(2)O(4))]·2H(2)O, the Ni(II) ion is in an essentially square-planar geometry involving an N(2)O(2) atom set of the tetra-dentate Schiff base ligand. The Ni atom lies on a crystallographic twofold rotation axis. The asymmetric unit contains one half-mol-ecule of the complex and a water mol-ecule. An inter-molecular O-H?O hydrogen bond forms a four-membered ring, producing an R(1) (2)(4) ring motif involving a bifurcated hydrogen bond to the phenolate O atoms of the complex mol-ecule. In the crystal structure, mol-ecules are linked by ?-? stacking inter-actions, with centroid-centroid distances in the range 3.5750?(11)-3.7750?(11)?Å. As a result of the twofold symmetry, the central benzene ring makes the same dihedral angle of 15.75?(9)° with the two outer benzene rings. The dihedral angle between the two hydroxy-phenyl rings is 13.16?(5)°. In the crystal structure, mol-ecules are linked into infinite one-dimensional chains by directed four-membered O-H?O-H inter-actions along the c axis and are further connected by C-H?O and ?-? stacking into a three-dimensional network. An inter-esting feature of the crystal structure is the short Ni?O, O?O and N?N inter-actions which are shorter than the sum of the van der Waals radii of the relevant atoms. The crystal structure is stabilized by inter-molecular O-H?O and C-H?O hydrogen bonds and by ?-? stacking inter-actions.

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