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Triazido-[tris-(2-pyridyl-?N)methyl-amine]cobalt(III).

ABSTRACT: The title compound, [Co(N(3))(3)(C(16)H(14)N(4))], was synthesized by hydro-thermal reaction of [Co(NH(3))(6)](NO(3))(3), NaN(3) and tris-(2-pyrid-yl)methyl-amine. The structure contains two independent complexes in the asymmetric unit, with closely comparable geometry. The Co(III) atoms are hexa-coordinated by three N atoms from the tridentate tris-(2-pyrid-yl)methyl-amine ligands and three azide ions in a fac arrangement. N-H?N hydrogen bonds are formed between the amino group and the uncoordinated terminal N atoms of the azide ligands.

SUBMITTER: Hao L

PROVIDER: S-EPMC2959905 | biostudies-other | 2008

REPOSITORIES: biostudies-other

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Triazido-[tris-(2-pyridyl-κN)methyl-amine]cobalt(III).

Hao Lujiang L Liu Xia X

Acta crystallographica. Section E, Structure reports online 20081108 Pt 12

The title compound, [Co(N(3))(3)(C(16)H(14)N(4))], was synthesized by hydro-thermal reaction of [Co(NH(3))(6)](NO(3))(3), NaN(3) and tris-(2-pyrid-yl)methyl-amine. The structure contains two independent complexes in the asymmetric unit, with closely comparable geometry. The Co(III) atoms are hexa-coordinated by three N atoms from the tridentate tris-(2-pyrid-yl)methyl-amine ligands and three azide ions in a fac arrangement. N-H⋯N hydrogen bonds are formed between the amino group and the uncoordi ...[more]

PMID: 21581120

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Dicyanido[tris-(2-pyridyl-meth-yl)amine]-cobalt(III) hexa-fluorido-phosphate.

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| S-EPMC3089135 | biostudies-literature

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Project description:In the title complex, [Co(C(10)H(6)O(2))(C(18)H(18)N(4))]PF(6)·0.5H(2)O, the Co(III) ion is six-coordinated in a distorted octa-hedral geometry by four N atoms from a tris-(2-pyridyl-meth-yl)amine ligand and two O atoms from a naphthalene-2,3-diolate ligand. The asymmetric unit contains two complex cations, two hexa-fluoridophosphate anions and one uncoordinated water mol-ecule. In one of the hexa-fluoridophosphate anions, four of the F aroms are disordered over two sets of sites in a 0.632 (11):0.368 (11) ratio. In the crystal, the cations, anions and water mol-ecules are connected by O-H⋯O and O-H⋯F hydrogen bonds. π-π inter-actions are present between the pyridine rings [centroid-centroid distance = 3.814 (1) Å].

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Aqua-dicrotonato(di-2-pyridyl-amine)cobalt(II).

Project description:The Co atom in the title complex, [Co(CH(3)CHCHCOO)(2)(C(10)H(9)N(3))(H(2)O)], has a distorted recta-ngular-pyramidal geometry formed by the chelating dipyridylamine ligand, and two O atoms of monodentate carboxyl-ate groups of two different crotonate anions and a water molecule. The complex forms a three-dimensional supra-molecular network via inter-molecular O-H?O, N-H?O and C-H?O hydrogen-bonding contacts.

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Project description:The asymmetric unit of the title structure, [Co(?(6)-C14H10){Sn(CH3)3}3], contains two independent mol-ecules. Each anthracene ligand is ?(6)-coordinating to a Co(III) cation and is nearly planar [fold angles of 5.4?(3) and 9.7?(3)°], as would be expected for its behaving almost entirely as a donor to a high-oxidation-state metal center. The slight fold in each anthracene ligand gives rise to slightly longer Co-C bond lengths to the ring junction carbon atoms than to the other four. Each Co(III) cation is further coordinated by three Sn(CH3)3 ligands, giving each mol-ecule a three-legged piano-stool geometry. In each of the two independent mol-ecules, the trio of SnMe3 ligands are modeled as disordered over two positions, rotated by approximately 30%, such that the C atoms nearly overlap. In one mol-ecule, the disorder ratio refined to 0.9365?(8):0.0635?(8), while that for the other refined to 0.9686?(8):0.0314?(8). The mol-ecules are well separated, and thus no significant inter-molecular inter-actions are observed. The compound is of inter-est as the first structure report of an ?(6)-anthracene cobalt(III) complex.

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Project description:In the cation of the title compound, [Co(C(2)H(8)N(2))(3)][In(C(2)O(4))(2)(CHO(2))(2)]·2H(2)O, the Co-N bond lengths lie in the range 1.960?(5)-1.997?(5)?Å. In the anion, the In(III) atom is coordin-ated by four O atoms from two oxalato ligands and two O atoms from two formato ligands in a distorted octa-hedral geometry. Inter-molecular O-H?O and N-H?O hydrogen bonds form an extensive hydrogen-bonding network, which link the cations, anions and water mol-ecules into three-dimensional structure.

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