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Dichloridobis(3,4,5-trimethyl-1H-pyrazole-κN)cobalt(II).

ABSTRACT: In the title compound, [Co(II)Cl(2)(C(6)H(10)N(2))(2)], a pair of 3,4,5-trimethyl-pyrazoles act as monodentate ligands. Two Cl(-) anions are also bonded directly to the Co(II) atom, which has a CoN(2)Cl(2) chromophore in a slightly distorted tetra-hedral geometry. The two mol-ecules in the asymmetric unit are related by an approximate twofold rotation roughly parallel to the a axis. The amino H atom in the pyrazole ring participates in weak N-H⋯Cl hydrogen bonds to form chains that propagate roughly parallel to the c axis.

SUBMITTER: Lyubartseva G

PROVIDER: S-EPMC3007936 | biostudies-literature |

REPOSITORIES: biostudies-literature

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trans-Bis(thio-cyanato-κN)tetra-kis-(3,4,5-trimethyl-1H-pyrazole-κN)nickel(II)-3,4,5-trimethyl-1H-pyrazole (1/1).

Project description:In the title compound, [Ni(NCS)(2)(C(6)H(10)N(2))(4)]·C(6)H(10)N(2), the asymmetric unit comprises a Ni(II) complex and a co-crystallised mol-ecule of 3,4,5-trimethyl-1H-pyrazole (PzMe(3)). The Ni(II) atom is coordinated by four PzMe(3) mol-ecules and two thio-cyanate anions to define a trans N(4)S(2) distorted octa-hedral geometry. A number of intra-molecular N-H⋯N, N-H⋯S and C-H⋯N inter-actions contribute to the stability of the complex. The crystal structure is stabilized by inter-molecular N-H⋯S inter-actions, which link neighbouring mol-ecules into chains along the a axis.

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Dichloridobis(4-methyl-3,5-diphenyl-1H-pyrazole-κN)copper(II).

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Project description:The title compound, [CoCl(2)(C(11)H(15)N(3)O(2)Si)(2)]·C(3)H(7)NO, was synthesized from 5-nitro-1-trimethyl-silylmethyl-1H-benzimid-azole and cobalt(II) chloride in dimethyl-formamide. The Co(II) atom is coordinated in a distorted tetra-hedral environment by two Cl atoms and two N atoms. In the crystal structure, there are a number of C-H⋯Cl and C-H⋯O hydrogen-bonding inter-actions between symmetry-related mol-ecules.

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Dibromidobis(3,5-dimethyl-1H-pyrazole-κN)cobalt(II).

Project description:In the mononuclear title complex, [CoBr(2)(C(5)H(8)N(2))(2)], the Co(II) atom is coordinated by two N atoms from two monodentate 3,5-dimethyl-pyrazole ligands and two Br atoms in a highly distorted tetra-hedral geometry. In the crystal, the complex mol-ecules are linked by inter-molecular N-H⋯Br hydrogen bonds into chains along [101]. An intra-molecular N-H⋯Br hydrogen bond is also present.

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Project description:In the title complex, [CuCl(2)(C(9)H(12)N(4))], the Cu(II) atom exhibits a distorted square-planar coordination geometry involving two chloride ions and two N-atom donors from the bipyrazole ligand. The chelate ring including the Cu(II) atom is essentially planar, with a maximum deviation of 0.0181 (17) Å for one of the coordinated N atoms. This plane forms a dihedral angle of 30.75 (6)° with the CuCl(2) plane. In the crystal, each pair of adjacent mol-ecules is linked into a centrosymmetric dimer by N-H⋯Cl hydrogen bonds. The crystal structure is stabilized by inter-molecular C-H⋯N and C-H⋯Cl hydrogen bonds and weak slipped π-π stacking inter-actions between symmetry-related mol-ecules, with an inter-planar separation of 3.439 (19) Å and a centroid-centroid distance of 3.581 (19) Å.

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Dichloridobis{6-methyl-2-[(trimethyl-silyl)amino]pyridine-?N}cobalt(II).

Project description:In the structure of the title compound, [CoCl(2)(C(9)H(16)N(2)Si)(2)], the Co(II) atom is located on an inversion center in a slightly distorted tetra-hedral environment formed by two chloride ions and the pyridine N atoms of two chelating 6-methyl-2-[(trimethyl-silyl)amino]pyridine ligands. The dihedral angle between the planes of the pyridine rings is 80.06?(5)°. Cohesion within the crystal structure is accomplished by N-H?Cl hydrogen bonds.

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