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Bis{2-[2-(1H-indol-3-yl)ethyl-imino-meth-yl]phenolato-?N,O}nickel(II) N,N-dimethyl-formamide disolvate.

ABSTRACT: The Ni atom in the title compound, [Ni(C(17)H(15)N(2)O)(2)]·2C(3)H(7)NO, lies on a twofold rotation axis. It is N,O-chelated by the deprotonated Schiff base 2-[2-(1H-indol-3-yl)ethyl-imino-meth-yl]phenolate ligand in a square-planar coordination environment. The mol-ecule is linked to a solvent mol-ecule by an indole-dimethyl-formamide N-H?O hydrogen bond.

SUBMITTER: Ali HM

PROVIDER: S-EPMC2961391 | biostudies-literature | 2008 May

REPOSITORIES: biostudies-literature

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Bis{2-[2-(1H-indol-3-yl)ethyl-imino-meth-yl]phenolato-κN,O}nickel(II) N,N-dimethyl-formamide disolvate.

Ali Hapipah M HM Mohamed Mustafa Mohamed Ibrahim MI Rizal Mohd Razali MR Ng Seik Weng SW

Acta crystallographica. Section E, Structure reports online 20080510 Pt 6

The Ni atom in the title compound, [Ni(C(17)H(15)N(2)O)(2)]·2C(3)H(7)NO, lies on a twofold rotation axis. It is N,O-chelated by the deprotonated Schiff base 2-[2-(1H-indol-3-yl)ethyl-imino-meth-yl]phenolate ligand in a square-planar coordination environment. The mol-ecule is linked to a solvent mol-ecule by an indole-dimethyl-formamide N-H⋯O hydrogen bond. ...[more]

PMID: 21202476

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Bis{2-(5-hydr-oxy-2-[1-(hydroxy-imino)eth-yl]phenolato-?O,N}nickel(II) N,N-dimethyl-formamide disolvate.

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| S-EPMC2971387 | biostudies-literature

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Project description:The Cu(II) atom in the title complex, [Cu(C(18)H(21)N(2)O(2))(C(2)H(3)O(2))], is tetra-coordinated by two N atoms and two O atoms, of which one O atom is attributed to the acetate group and the other atoms are from the tridentate salicylideneiminate ligand, forming a slight distorted square-planar environment. The other acetate O atom exhibits a very weak intra-molecular inter-action toward the Cu atom, the Cu-O distance of 2.771 (2) Å being shorter than the van der Waals radii for Cu and O atoms (2.92 Å). Furthermore, there are weak inter-molecular inter-actions, in which the bonding O atom of the acetate group can bridge to the Cu atom of another complex, and the distance of 2.523 (2) Å is about 0.4 Å shorter than the van der Waals Cu-O distance in other crystal structures.

| S-EPMC2959767 | biostudies-literature

{2-[2-(Ethyl-amino)ethyl-imino-meth-yl]-5-methoxy-phenolato}thio-cyanato-nickel(II).

Project description:In the title mononuclear nickel(II) complex, [Ni(C(12)H(17)N(2)O(2))(NCS)], the metal atom is four-coordinated in a tetra-hedrally distorted square-planar geometry by the phenolate O atom, the imine N atom and the amine N atom of the Schiff base ligand and by the N atom of a thio-cyanate ligand. In the crystal structure, centrosymmetrically related mol-ecules are linked into dimers through inter-molecular N-H⋯O hydrogen bonds. These dimers are further connected by inter-molecular C-H⋯S hydrogen bonds, forming chains running parallel to [101].

| S-EPMC2979965 | biostudies-literature

Bis[2,4-dichloro-6-(ethyl-imino-meth-yl)phenolato-?N,O]nickel(II).

Project description:In the title compound, [Ni(C(9)H(8)Cl(2)NO)(2)], the Ni(II) ion lies on an inversion centre and is coordinated in a slightly distorted square-planar geometry by an N and an O atom from two symmetry-related bidentate 2,4-dichloro-6-(ethyl-imino-meth-yl)phenolate ligands. In the crystal structure, there are short Cl?Cl distances of 3.506?(1) and 3.350?(1)?Å.

| S-EPMC3247532 | biostudies-literature

Redetermination of bis-(2-formyl-phenolato-κO,O')nickel(II) as bis-[2-(imino-meth-yl)phenolato-κN,O']nickel(II).

Project description:The crystal structure of bis-(2-formyl-phenolato-κ(2)O,O')nickel(II), [Ni(C(7)H(5)O(2))(2)], a square-planar centrosymmetric complex, has been reported previously [Li & Chen (2006). Acta Cryst. E62, m1038-m1039]. However, a number of warning signs allows the assumption that the carbonyl group in the salicylaldehydate ligand of the claimed complex is incorrect. The crystal structure was therefore redetermined on basis of the originally deposited structure factors. After substituting the carbonyl O atom by an N atom, the model can be completed with an imine H atom, which was clearly discernible in a difference map. The resulting model, corresponding to bis-[2-(imino-meth-yl)phenolato-κ(2)N,O']nickel(II), [Ni(C(7)H(6)NO)(2)], converges well and none of the previous structural alerts remains. This reinter-pretation is also consistent with the published synthesis, which was carried out using salicylaldehyde in the presence of aqueous NH(3). The reinter-preted structure is virtually identical to earlier reports dealing with this bis-iminato Ni(II) complex.

| S-EPMC2979995 | biostudies-literature

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