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{6,6'-Dimeth-oxy-2,2'-[4,5-dimethyl-o-phenyl-enebis(nitrilo-methyl-idyne)]diphenolato}nickel(II).

ABSTRACT: In the title Schiff base complex, [Ni(C(24)H(22)N(2)O(4))], the Ni(II) atom has a slightly distorted square-planar coordination environment. The dihedral angles between the central benzene ring and the two outer rings are 7.62?(16) and 9.78?(17)°. The crystal structure is stabilized by inter-molecular C-H?O hydrogen bonds and ?-? inter-actions with a centroid-centroid distance of 3.8218?(19)?Å.

SUBMITTER: Kargar H

PROVIDER: S-EPMC2983194 | biostudies-literature | 2010 Sep

REPOSITORIES: biostudies-literature

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{6,6'-Dimeth-oxy-2,2'-[4,5-dimethyl-o-phenyl-enebis(nitrilo-methyl-idyne)]diphenolato}nickel(II).

Kargar Hadi H Kia Reza R Tahir Muhammad Nawaz MN Sahraei Atefeh A

Acta crystallographica. Section E, Structure reports online 20100911 Pt 10

In the title Schiff base complex, [Ni(C(24)H(22)N(2)O(4))], the Ni(II) atom has a slightly distorted square-planar coordination environment. The dihedral angles between the central benzene ring and the two outer rings are 7.62 (16) and 9.78 (17)°. The crystal structure is stabilized by inter-molecular C-H⋯O hydrogen bonds and π-π inter-actions with a centroid-centroid distance of 3.8218 (19) Å. ...[more]

PMID: 21587396

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{5,5'-Dimeth-oxy-2,2'-[4,5-dimethyl-o-phenyl-enebis(nitrilo-methyl-idyne)]diphenolato}nickel(II).

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{6,6'-Dimeth-oxy-2,2'-[2,2-dimethyl-propane-1,3-diylbis(nitrilo-methyl-idyne)]diphenolato}nickel(II) 1.78-hydrate.

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Project description:In the title compound, [Ni(C(20)H(22)N(2)O(4))]·H(2)O, the Ni(II) ion and the water mol-ecule are located on a twofold rotation axis. The Ni ion is coordinated by two N [Ni-N = 1.8462 (18) Å] and two O [Ni-O = 1.8645 (14) Å] atoms in a distorted square-planar geometry. The water mol-ecule and the Ni complex mol-ecule are paired via O-H⋯O hydrogen bonds.

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Aqua-{6,6'-dimeth-oxy-2,2'-[ethane-1,2-diylbis(nitrilo-methyl-idyne)]diphenolato}nickel(II).

Project description:The title complex, [Ni(C(18)H(18)N(2)O(4))(H(2)O)], lies on a mirror plane with the Ni(II) ion coordinated by two N and two O atoms of a tetra-dentate Schiff base ligand and one water O atom in a distorted square-pyramidal enviroment. The -CH(2)-CH(2)- group of the ligand is disordered equally over two sites about the mirror plane. The dihedral angle between the mean planes of the two symmetry-related chelate rings is 37.16?(6)°. In the crystal structure, inter-molecular O-H?O hydrogen bonds link complex mol-ecules into one-dimensional chains along [100] and these chains are linked, in turn, by very weak inter-molecular C-H?O hydrogen bonds into a two-dimensional network.

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{6,6'-Dimeth-oxy-2,2'-[o-phenyl-enebis(nitrilo-methyl-idyne)]diphenolato}cobalt(II) dichloro-methane disolvate.

Project description:The title compound, [Co(C(22)H(18)N(2)O(4))]·2CH(2)Cl(2), was isolated from the reaction of N,N'(o-phenyl-ene)bis-(vanillalimine) (H(2)L) with Co(SCN)(2). The crystal structure contains a Co(II) ion surrounded by the L(2-) ligand in a slightly distorted square-planar fashion. Inter-molecular C-H?O hydrogen-bonding contacts between the dichloro-methane solvent mol-ecules and the meth-oxy or carboxyl-ate O atoms are observed in the crystal structure. The planar complex mol-ecules stack through inversion related ?-? inter-actions between the six-membered rings of the vanillalimine half ligands. The distance between centroids is 3.498?(2)?Å and the perpendicular distance is 3.345?Å. A partial stacking is observed with a centroid-centroid distance of 3.830?(2)?Å, a perpendicular distance of 3.350?Å and a slippage of 1.856?Å.

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{4,4'-Dimeth-oxy-2,2'-[2,2-dimethyl-propane-1,3-diylbis(nitrilo-methyl-idyne)]diphenolato}nickel(II).

Project description:In the title complex, [Ni(C(21)H(24)N(2)O(4))], the Ni(II) ion has a slightly distorted square-planar geometry, coordinated by the two N and two O atoms of a new tetra-dentate Schiff base ligand. The dihedral angle between the planes of the two NiNC(3)O chelate rings is 14.37?(12)°.

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{6,6'-Dieth-oxy-2,2'-[2,2-dimethyl-propane-1,3-diylbis(nitrilo-methyl-idyne)]diphenolato}nickel(II) monohydrate.

Project description:In the title complex, [Ni(C(23)H(28)N(2)O(4))]·H(2)O, the Ni(II) ion is coordinated by the N(2)O(2) unit of the tetra-dentate Schiff base ligand in a slightly distorted planar geometry. The asymmetric unit of the title compound comprises one complex mol-ecule and a water mol-ecule of crystallization. The H atoms of the water mol-ecule make bifurcated inter-molecular hydrogen bonds with the O atoms of the phenolate and eth-oxy groups with R(1) (2)(5) and R(1) (2)(6) ring motifs, which may, in part, influence the mol-ecular configuration. The dihedral angle between the two benzene rings is 31.43 (5)°. The crystal structure is further stabilized by inter-molecular C-H⋯O and C-H⋯π inter-actions, which link neighbouring mol-ecules into one-dimensional extended chains along the a axis. An inter-esting feature of the crystal structure is the short inter-molecular C⋯C [3.3044 (14) Å] contact which is shorter than the sum of the van der Waals radii.

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