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{2,2'-[Cyclo-hexane-1,2-diylbis(nitrilo-methyl-idyne)]diphenolato}nickel(II).

ABSTRACT: In the title mononuclear nickel(II) complex, [Ni(C(20)H(20)N(2)O(2))], the Ni atom is four-coordinated in a square-planar geometry by the four donor atoms of the Schiff base ligand. The dihedral angle between the two benzene rings is 9.4?(2)°. The cyclo-hexyl group adopts a C-form chair conformation.

SUBMITTER: Tang C

PROVIDER: S-EPMC2968678 | biostudies-literature | 2009 Feb

REPOSITORIES: biostudies-literature

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{2,2'-[Cyclo-hexane-1,2-diylbis(nitrilo-methyl-idyne)]diphenolato}nickel(II).

Tang Chunbao C

Acta crystallographica. Section E, Structure reports online 20090225 Pt 3

In the title mononuclear nickel(II) complex, [Ni(C(20)H(20)N(2)O(2))], the Ni atom is four-coordinated in a square-planar geometry by the four donor atoms of the Schiff base ligand. The dihedral angle between the two benzene rings is 9.4 (2)°. The cyclo-hexyl group adopts a C-form chair conformation. ...[more]

PMID: 21582091

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{6,6'-Dimethoxy-2,2'-[cyclo-hexane-1,2-diylbis(nitrilo-methyl-idyne)]diphenolato-?O,N,N',O}iron(II) monohydrate.

Project description:In the title complex, [Fe(C(22)H(24)N(2)O(4))]·H(2)O, the Fe(II) center is four-coordinated by two O and two N atoms from 2,2'-[6,6'-dimethoxy-cyclo-hexane-1,2-diylbis(nitrilo-methyl-idyne)]diphen-olate (L) ligands in a distorted square-planar geometry. Uncoordinated water and FeL mol-ecules are paired via inter-molecular water-meth-oxy O-H?O hydrogen bonds.

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(R,R)-4,4'-Dibromo-2,2'-[cyclo-hexane-1,2-diylbis(nitrilo-methyl-idyne)]diphenol.

Project description:The mol-ecule of the title compound, C(20)H(20)Br(2)N(2)O(2), lies on a twofold axis. It contains two stereogenic C atoms with R chirality and thus it is the enatiomerically pure R,R-diastereomer. There is an intra-molecular O-H?N hydrogen bond.

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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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Project description:The title compound, [Cu(C(20)H(20)N(2)O(2))], crystallizes with two independent mol-ecules in the asymmetric unit. In each mol-ecule, the Cu(II) atom occupies the tetra-dentate N(2)O(2) cavity of the salen-type Schiff base ligand, adopting a distorted square-planar geometry with r.m.s. deviations of the coordin-ating atoms of 0.0522?(2) and 0.1128?(4)?Å. No hydrogen bonds or ?-? stacking inter-action are observed.

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Project description:In the title dinuclear salen-type complex, [CuEu(C(22)H(24)N(2)O(4))(NO(3))(3)(CH(3)OH)], the Cu(II) ion is five-coordinated to two imine N atoms and two phenolate O atoms and one O from the bridging nitrate group. The Eu(III) ion is ligated to three nitrate groups, four O atoms from the salen-type ligand and one methanol mol-ecule, leading to a distorted tenfold coordination for the rare earth cation. One of the three nitrate anions is disordered over two positions in a 0.66 (5):0.34 (5) ratio.

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{3,3',5,5'-Tetra-meth-oxy-2,2'-[ethane-1,2-diylbis(nitrilo-methyl-idyne)]diphenolato}nickel(II).

Project description:The title square-planar nickel complex, [Ni(C(20)H(22)N(2)O(6))], has Ni-N and Ni-O bond lengths of 1.8448?(14)/1.8478?(14) and 1.8536?(12)/1.8520?(12)?Å. There is a slight twist in the two benzene rings at each end of the complex [dihedral angle = 11.11?(5)°]. All the atoms of the meth-oxy substitutents are in the plane of the ring to which they are attached except for one which deviates slightly [0.365?(3)?Å]. In the crystal, weak C-H?O inter-molecular inter-actions connect the mol-ecules.

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Bis{?-2,2'-[ethane-1,2-diylbis(nitrilo-methyl-idyne)]diphenolato}dinickel(II).

Project description:The asymmetric unit of the title compound, [Ni(2)(C(16)H(14)N(2)O(2))(2)], contains an Ni(II) cation which is coordinated by two imine N atoms and by two phenolate O atoms of the salen ligand {salen = N,N'-bis-(salicyl-idene)ethane-1,2-diamine or 2,2'-[ethane-1,2-diyl-bis(nitrilo-methyl-idyne)]diphenol}, leading to a distorted square-planar conformation. When a secondary Ni-O inter-action > 2.41?Å to the neighbouring phenolate O atom is considered, two mol-ecules are linked into a centrosymmetric dimer with an overall square-pyramidal coordination for the Ni(II) cation. Weak ?-? inter-actions with a shortest interplanar distance of 3.704?Å help to stabilize the crystal structure.

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{?-6,6'-Dimeth-oxy-2,2'-[cyclo-hexane-1,2-diylbis(nitrilo-methyl-idyne)]diphenolato}trinitratocopper(II)lutetium(III).

Project description:In the title dinuclear Cu(II)-Lu(III) salen-type complex, [CuLu(C(22)H(24)N(2)O(4))(NO(3))(3)], with the ligand 6,6'-dimeth-oxy-2,2'-[cyclo-hexane-1,2-diylbis(nitrilo-methyl-idyne)]diphenolate, the irregular nine-coordinate Lu(III) coordination sphere comprises four O atoms from the ligand and five O atoms from three nitrate groups, two bidentate and one monodentate [Lu-O = 2.230?(3)-2.621?(4)?Å]. The slightly distorted square-planar four-coordinate Cu(II) atom comprises two imine N atoms [Cu-N = 1.903?(4) and 1.912?(4)?Å] and two phenolate O atoms from the ligand mol-ecule [Cu-O = 1.897?(3) and 1.906?(3)?Å]. All atoms of the cyclo-hexane ring of the ligand mol-ecule are disordered over two sets of sites with equal occupancy.

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{μ-6,6'-Dieth-oxy-2,2'-[ethane-1,2-diylbis(nitrilo-methyl-idyne)]diphenolato}trinitratoholmium(III)nickel(II).

Project description:In the title heteronuclear Ni(II)-Ho(III) complex (systematic name: {μ-6,6'-dieth-oxy-2,2'-[ethane-1,2-diylbis(nitrilo-methyl-idyne)]diphenolato-1κ(4)O(1),O(1'),O(6),O(6'):2κ(4)O(1),N,N',O(1')}trinitrato-1κ(6)O,O'-holmium(III)nickel(II)), [HoNi(C(20)H(22)N(2)O(4))(NO(3))(3)], with the hexa-dentate Schiff base compartmental ligand N,N'-bis-(3-ethoxy-salicyl-idene)ethyl-enediamine (H(2)L), the Ho and Ni atoms are doubly bridged by two phenolate O atoms of the Schiff base ligand. The coordination of Ni is square-planar with the donor centers of two imine N atoms and two phenolate O atoms. The holmium(III) center has a tenfold -coordination environment of O atoms, involving the phenolate O atoms, two eth-oxy O atoms and two O atoms each from the three nitrates. Weak C-H⋯O and O⋯Ni [3.383 (4) Å] inter-actions generate a two-dimensional zigzag sheet.

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4,4',6,6'-Tetra-hydro-seleno-2,2'-[(E,E)-cyclo-hexane-1,2-diylbis(nitrilo-methyl-idyne)]diphenol.

Project description:In the title mol-ecule, C(20)H(22)N(2)O(2)Se(4), the dihedral angle between the pendant aromatic rings is 67.1 (2)°. The conformation is stabilized by two intra-molecular O-H⋯N hydrogen bonds.

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