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Dichlorido(2,3-di-2-pyridyl-pyrazine-?N,N)palladium(II).

ABSTRACT: The Pd(II) ion in the title complex, [PdCl(2)(C(14)H(10)N(4))], is four-coordinated in a distorted square-planar environment defined by two N atoms of a chelating 2,3-di-2-pyridyl-pyrazine (dpp) ligand and two chloride anions. The pyridine ring coordinated to the Pd atom is inclined slightly to its carrier pyrazine ring [dihedral angle = 14.4?(3)°], whereas the uncoordinated pyridine ring is inclined considerably to the pyrazine ring [dihedral angle = 52.2?(2)°]. The dihedral angle between the two pyridine rings is 58.8?(2)°. In the crystal, complex mol-ecules are connected by inter-molecular C-H?Cl and C-H?N hydrogen bonds, forming a three-dimensional network. Intra-molecular C-H?Cl hydrogen bonds are also present.

SUBMITTER: Ha K

PROVIDER: S-EPMC3247551 | biostudies-literature | 2011 Nov

REPOSITORIES: biostudies-literature

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Dichlorido(2,3-di-2-pyridyl-pyrazine-κN,N)palladium(II).

Ha Kwang K

Acta crystallographica. Section E, Structure reports online 20111029 Pt 11

The Pd(II) ion in the title complex, [PdCl(2)(C(14)H(10)N(4))], is four-coordinated in a distorted square-planar environment defined by two N atoms of a chelating 2,3-di-2-pyridyl-pyrazine (dpp) ligand and two chloride anions. The pyridine ring coordinated to the Pd atom is inclined slightly to its carrier pyrazine ring [dihedral angle = 14.4 (3)°], whereas the uncoordinated pyridine ring is inclined considerably to the pyrazine ring [dihedral angle = 52.2 (2)°]. The dihedral angle between the t ...[more]

PMID: 22219856

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Dichlorido(2,3-di-2-pyridyl-pyrazine-?N,N)palladium(II).

Project description:The Pd(II) ion in the title complex, [PdCl(2)(C(14)H(10)N(4))], has a slightly distorted square-planar environment defined by the two pyridine N atoms of the chelating 2,3-di-2-pyridyl-pyrazine ligand and two chloride anions. The pyridine rings are considerably inclined to the least-squares plane of the PdCl(2)N(2) unit [maximum deviation = 0.073?(1)?Å], with dihedral angles of 64.19?(9) and 66.55?(9)°. The pyrazine ring is almost perpendicular to this plane and the dihedral angle is 88.2?(1)°. Two independent inter-molecular C-H?Cl hydrogen bonds, both involving the same Cl atom as a hydrogen-bond acceptor, give rise to chains running along the a and b axes, generating a layer structure extending parallel to (001). Mol-ecules are stacked in columns along the a axis. Along the b axis, successive mol-ecules stack in opposite directions.

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Project description:The Pd(II) ion in the title complex, [PdI(2)(C(14)H(10)N(4))], is four-coordinated in a slightly distorted square-planar environment by the two pyridine N atoms of the chelating 2,3-di-2-pyridyl-pyrazine (dpp) ligand and two iodide anions. In the crystal, the pyridine rings are considerably inclined to the least-squares plane of the PdI(2)N(2) unit [maximum deviation = 0.090?(2)?Å], making dihedral angles of 65.0?(2) and 66.6?(2)°. The pyrazine ring is perpendicular to the unit plane, with a dihedral angle of 89.9?(2)°. The complex mol-ecules are connected by C-H?I hydrogen bonds, forming a helical chain along the b axis.

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