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(4,4',6,6'-Tetra-tert-butyl-2,2'-{[2-(di-methyl-amino)-ethyl]-nitrilo-bis-(methyl-ene)}diphenolato)dioxidomolyb-denum(VI) chloro-form monosolvate.

ABSTRACT: In the title compound, [Mo(C(34)H(54)N(2)O(2))O(2)]·CHCl(3), the molybdenum(VI) ion exhibits a cis-dioxide distorted octa-hedral geometry. Two anionic phenolate O-atom donors and two neutral N-atom donors of the ligand are trans and cis, respectively. The Mo=O bond lengths and the O=Mo=O bond angle are typical for six-coordinated dioxomolyb-denum(VI) complexes. The Mo-N bond lengths are longer than 2.30 Å, as expected for a trans O=Mo-N structure.

SUBMITTER: Lei X

PROVIDER: S-EPMC3246940 | biostudies-literature |

REPOSITORIES: biostudies-literature

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6,6'-Di-tert-butyl-2,2'-[1,2-phenyl-ene-bis(nitrilo-methyl-idyne)]diphenol.

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| S-EPMC2960780 | 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).

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Project description:In the title complex, [Mn(C(36)H(50)N(2)O(2))(CH(3)COO)(H(2)O)]·CH(3)CH(2)OH, the Mn(III) atom is in an octa-hedral environment and is coordinated by the tetra-dentate amine-bis-(phenolate) ligand, a monodentate acetate anion and a water mol-ecule. An ethanol solvent mol-ecule is also found in the asymmetric unit. The structure displays O-H⋯O and C-H⋯O hydrogen bonding.

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Project description:The asymmetric unit of the title Schiff base complex, [Mn(C(36)H(46)N(2)O(2))Cl], comprises two crystallographically independent mol-ecules. The Mn(III) centre in each mol-ecule adopts a distorted square-pyramidal geometry. Each Mn(III) ion is coordinated by the N(2)O(2) atoms of the tetra-dentate Schiff base ligand forming the basal plane and the coordinated chloride anion occupies the apical position. Four bifurcated intra-molecular C-H?O contacts stabilize the mol-ecular structure. In the crystal packing, mol-ecules are linked into dimers via inter-molecular C-H?Cl contacts and further stabilized by C-H?? inter-actions. The crystal studied was a non-merohedral twin, the refined ratio of the twin components being 0.441?(1):0.559?(1).

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Project description:The asymmetric unit of the title complex, [Mn(C(28)H(30)N(2)O(2))Cl(H(2)O)][Mn(C(28)H(30)N(2)O(2))Cl(CH(3)OH)], contains two discrete Mn(III) complexes of a Schiff base ligand, with an N(2)O(2) donor set. Both Mn(III) centers are in a distorted octa-hedral geometry with the N(2)O(2) donor atoms of the tetra-dentate Schiff base dianion in the equatorial plane. The axial positions in the coordination environment of one Mn(III) complex are occupied by a chloride ion and a water mol-ecule, but a methanol mol-ecule replaces the water mol-ecule in the other complex. The coordinated water mol-ecule takes part in an O-H?Cl hydrogen bond between the two Mn(III) complexes. In the crystal structure, O-H?Cl hydrogen bonds link the mol-ecules into infinite one-dimensional chains along the [100] direction. The crystal structure is stabilized by O-H?Cl hydrogen bonds together with weak C-H?O and C-H?Cl inter-actions. A C-H?? inter-action is also observed in the crystal structure.

| S-EPMC2961111 | biostudies-literature

6,6'-Di-tert-butyl-4,4'-dimeth-oxy-2,2'-[1,3-diazinane-1,3-diylbis(methyl-ene)]diphenol 0.19-hydrate.

Project description:In the title hexa-hydro-pyrimidine derivative, C(28)H(42)N(2)O(4)·0.19H(2)O, the 1,3-diazinane ring has a chair conformation with a diequatorial substitution. The asymmetric unit contains one half-organic mol-ecule and a solvent water mol-ecule with occupany 0.095. The mol-ecule lies on a mirror plane perpendicular to [010] which passes through the C atoms at the 2- and 5-positions of the heterocyclic system. The partially occupied water mol-ecule is also located on this mirror plane. The dihedral angle between the planes of the aromatic rings is 17.71?(3)°. Two intra-molecular O-H?N hydrogen bonds with graph-set motif S(6) are present. No remarkable inter-molecular contacts exist in the crystal structure.

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