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{2,2'-[(2,2-Dimethyl-propane-1,3-di-yl)-bis-(nitrilo-methyl-idyne)]-diphenolato}-dioxidomolybdenum(VI).

ABSTRACT: In the structure of the title compound, [Mo(C(19)H(20)N(2)O(2))O(2)], the Mo atom exhibits oxidation state +VI and is surrounded by two O atoms and the tetra-dentate Schiff base ligand 2,2'-[(2,2-dimethyl-propane-1,3-di-yl)bis-(nitrilo-methyl-idyne)]diphenolate in a distorted octa-hedral configuration. An intra-molecular C-H⋯O hydrogen bond between a methyl-ene group and one O atom of the O=Mo(VI)=O unit, as well as additional inter-molecular hydrogen bonds between neighboring mol-ecules, lead to a weakly bonded inversion-symmetric dimeric structure.

SUBMITTER: Abbasi A

PROVIDER: S-EPMC2961957 | biostudies-literature |

REPOSITORIES: biostudies-literature

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{1,1'-[(2,2-Dimethyl-propane-1,3-di-yl)bis-(nitrilo-methyl-idyne)]di-2-naphthol-ato}dioxidomolybdenum(VI) dichloro-methane 1.75-solvate.

Project description:In the crystal structure of the title compound, [Mo(C(27)H(24)N(2)O(2))O(2)]·1.75CH(2)Cl(2), the Mo(VI) ion is coordinated by two oxide O atoms and by two O and two N atoms of the tetra-dentate 1,1'-[(2,2-dimethyl-propane-1,3-di-yl)bis-(nitrilo-methyl-idyne)]di-2-naphtholate Schiff base ligand in a distorted octa-hedral configuration. The compound crystallizes with 1.75 mol-ecules of dichloro-methane per complex mol-ecule. In the crystal, symmetry-related mol-ecules are linked by a number of C-H⋯O inter-actions involving both the Schiff base ligand and the partly disordered dichloro-methane solvent mol-ecules, leading to the formation of a two-dimensional network extending parallel to (101).

| S-EPMC2969995 | biostudies-literature

Di-?-hydroxido-bis-({2,2'-[propane-1,3-diylbis(nitrilo-methyl-idyne)]diphenolato}iron(III)) dimethyl-formamide disolvate.

Project description:The structure of the title compound, [Fe(2)(C(17)H(16)N(2)O(2))(2)(OH)(2)]·2C(3)H(7)N, consists of centrosymmetric dimeric units in which crystallographically equivalent Fe(III) ions are doubly bridged by hydroxide groups. Each Fe(III) center in the complex has a six-coordinated distorted cis-FeN(2)O(4) octa-hedral geometry.

| S-EPMC2968628 | biostudies-literature

{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)°.

| S-EPMC2969458 | biostudies-literature

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

Project description:In the title complex, [Cu(C(23)H(28)N(2)O(4))]·H(2)O, the Cu(II) ion has a distorted planar geometry, coordinated by the N(2)O(2) unit of the tetra-dentate Schiff base ligand. The asymmetric unit comprises one complex mol-ecule and a water mol-ecule of crystallization. The water H atoms form bifurcated O-H?(O,O) 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 O-Cu-N coordination planes is 31.02?(6)° and the dihedral angle between the two benzene rings is 34.98?(7)°. In the crystal structure, mol-ecules are linked together by inter-molecular C-H?O inter-actions, forming extended chains along the a axis. The crystal structure is further stabilized by inter-molecular C-H?? and ?-? [centroid-centroid = 3.5068?(13)?Å] inter-actions.

| S-EPMC2977574 | biostudies-literature

{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.

| S-EPMC2968910 | biostudies-literature

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

Project description:In the title complex, [Ni(C(21)H(24)N(2)O(4))]·1.78H(2)O, the Ni(II) ion has a slightly distorted planar geometry, coordinated by the two N and two O atoms of the tetra-dentate Schiff base ligand, with a mean deviation of 0.272?Å from the NiN(2)O(2) plane. The N and O donor atoms are mutually cis. The dihedral angle between two benzene rings of the ligand is 38.86?(8)°. There are also three solvent water mol-ecules, two of which lie across different crystallographic twofold rotation axes; one of these is partially occupied with a refined occupancy factor of 0.570?(7). The water mol-ecules are linked together as tetra-mers in R(2) (2)(8) ring motifs, which also connect two neighbouring mol-ecules of the complex through a network of O-H?O hydrogen bonds. The crystal structure is further stabilized by inter-molecular C-H?O and C-H?? inter-actions, which link neighbouring mol-ecules into extended chains along the b axis. Other inter-esting features of the crystal structure are the short inter-molecular C?C [3.204?(3)-3.365?(3)?Å] and the C?O [3.199?(2)-3.205?(2)?Å] contacts which are shorter than the sum of the van der Waals radii of these atoms.

| S-EPMC2977614 | biostudies-literature

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

Project description:In the title compound, [Ni(C(21)H(24)N(2)O(2))]·H(2)O, both the complex mol-ecule and the water mol-ecule lie on a twofold rotation axis. The Ni(II) ion is coordinated in a distorted square-planar geometry by the tetra-dentate ligand. The dihedral angle between the two symmetry-related benzene rings is 47.12?(8)°. In the crystal, pairs of symmetry-related O-H?O hydrogen bonds form R(2) (2)(6) ring motifs. In addition, there are weak inter-molecular C-H?O hydrogen bonds, and ?-? stacking inter-actions with a centroid-centroid distance of 3.4760?(8)?Å.

| S-EPMC3254342 | biostudies-literature

{4,4',6,6'-Tetrachloro-2,2'-[2,2-dimethyl-propane-1,3-diylbis(nitrilo-methanylyl-idene)]diphenolato}dioxidomolyb-denum(VI).

Project description:The asymmetric unit of the title compound, [Mo(C(19)H(16)Cl(4)N(2)O(2))O(2)], comprises two independent mol-ecules (A and B). The geometry around the Mo(VI) atom is distorted octa-hedral in each complex mol-ecule, supported by two oxide O atoms and the N(2)O(2) donor atoms of the coordinating ligand. The dihedral angle between the benzene rings is 74.96?(11)?Å for mol-ecule A and 76.05?(11)?Å for mol-ecule B. In the crystal, the B mol-ecules are linked by pairs of C-H?Cl hydrogen bonds, forming inversion dimers. The crystal structure is further stabilized by C-H?? inter-actions. An inter-esting feature of the crystal structure is a Cl?Cl contact [3.3748?(18)?Å], which is shorter than the sum of the van der Waals radii of Cl atoms (3.50?Å).

| S-EPMC3470140 | biostudies-literature

{2,2'-[(2,2-Dimethyl-propane-1,3-di-yl)bis-(nitrilo-methyl-idyne)]diphenolato}palladium(II) ethanol hemisolvate.

Project description:The asymmetric unit of the title complex, [Pd(C(19)H(20)N(2)O(2))]·0.5C(2)H(5)OH, contains two mol-ecules of a Pd(II) complex of a Schiff base ligand with an N(2)O(2) donor set and one ethanol mol-ecule. The Pd(II) centers are in distorted square-planar geometries with the N(2)O(2) donor atoms of the tetra-dentate Schiff base dianions. The ethanol mol-ecule takes part in an O-H?O hydrogen bond. In the crystal structure, mol-ecules are stacked approximately along the b-axis direction. The O atom and three H atoms of the solvent molecule are disordered over two positions; the site occupancy factors are ca 0.8 and 0.2.

| S-EPMC2961822 | biostudies-other

4,4'-Dichloro-2,2'-[2,2-dimethyl-propane-1,3-diylbis(nitrilo-methyl-idyne)]diphenol.

Project description:The crystal of the title Schiff base compound, C(19)H(20)Cl(2)N(2)O(2), contains of two crystallographically independent mol-ecules with similar conformations. In each mol-ecule, two intramolecular O-H⋯N bonds generate S(6) motifs. The N atoms are also in close proximity to two H atoms of the dimethyl-propane groups, with H⋯N distances between 2.59 and 2.62 Å. The imine group is coplanar with the benzene ring. The dihedral angles between the benzene rings in the two independent mol-ecules are 58.20 (12) and 47.95 (12)°. The structure displays short inter-molecular Cl⋯Cl [3.3869 (11) Å] and Cl⋯O [3.175 (2)-3.204 (2) Å] inter-actions. The crystal structure is further stabilized by weak inter-molecular C-H⋯O, C-H⋯π and π-π [centroid-centroid distances 3.6416 (13)-3.8705 (14) Å] inter-actions.

| S-EPMC2967979 | biostudies-literature

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