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

Project description:The mol-ecule of the title compound, [NaNi(C(18)H(18)N(2)O(4))(C(2)N(3))(H(2)O)], is approximately planar, with a maximum deviation from the mol-ecular plane of 0.770?(5)?Å. The coordination environment of the Ni(2+) ion is distorted square-planar and it is N(2)O(2) coordinated by the 6,6'-dimeth-oxy-2,2'-[ethane-1,2-diylbis(nitrilo-methyl-idyne)]diphenolate Schiff base ligand. The Na(+) atom is chelated by the four O atoms of the Schiff base ligand, a water ligand and a dicyanamide anion. The structure displays inter-molecular O-H?N hydrogen bonding.

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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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{?-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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