The Pt(II) ion in the title complex, [PtBr(2)(C(14)H(10)N(4))], is four-coordinated in a distorted square-planar environment by two N atoms of a chelating 2,3-di-2-pyridyl-pyrazine ligand and two bromide anions. In the crystal, the pyridyl ring coordinated to the Pt atom is inclined slightly to its carrier pyrazine ring [dihedral angle = 14.7 (2)°], whereas the uncoordinated pyridyl ring is inc...

The Pt(II) ion in the title complex, [PtCl(2)(C(14)H(10)N(4))], is four-coordinated in a distorted square-planar environment by two N atoms of a chelating 2,3-di-2-pyridyl-pyrazine ligand and two chloride anions. The pyridyl ring coordinated to the Pt(II) atom is inclined slightly to its carrier pyrazine ring [dihedral angle = 13.5 (1)°], whereas the uncoordinated pyridyl ring is inclined consi...

The central Pt(II) atom in the title compound, [Pt(C40H47N2O3)(C24H45O2)], has a slightly distorted square-planar coordination environment. The dihedral angle between the plane formed by Pt and the chelating C and N atoms and that formed by Pt and the chelating O atoms is 2.1 (3)°. The angle between the planes of the two rings in the biphenyl-4-carbo-nitrile unit is 35.1 (5)°. One lateral alkan...

The title dinuclear platinum compound, [Pt(2)Cl(4)(C(22)H(16)N(4))(C(2)H(6)S)(2)], with a long bridging bipyridyl-type ligand, is centrosymmetric and the Pt(II) cation shows a slightly distorted square-planar coordination geometry. The Cl ligands are trans to each other, with a Cl-Pt-Cl angle of 178.83 (8)°. The pyridine ring forms a dihedral angle of 48.8 (2)° with the planar PtCl(2)SN unit. W...

In the crystal structure of the title complex, [Pt(C(5)H(4)NOS)(2)], the Pt atom is coordinated by two O atoms and two S atoms in a cis configuration, forming a distorted square-planar coordination geometry. The mol-ecule exhibits pseudo-C(2v) symmetry and is essentially planar, with a maximum deviation from planarity of 0.0124 (2) Å. The dihedral angle between the two pyridine rings is 5.85 (2)°.

The title cyclo-metalated platinum(II) complex with 2-(4-bromo-phen-yl)pyridinato and acetyl-acetonato ligands, [Pt(C11H7BrN)(C5H7O2)], consists of two crystallographically non-equivalent dimers, each stacked by π-π inter-actions with distances of ≃ 3.4 Å. In both dimers, the platinum(II) complexes are arranged anti-parallel to each other. Each complex exhibits a slightly distorted square-plana...

In the mononuclear title complex, [Pt(C(7)H(7))(2)(C(8)H(12))], the Pt(II) ion exhibits a square-planar coordination geometry defined by two methyl-phenyl ligands and the mid-points of the two π-coordinated double bonds of cyclo-octa-1,5-diene. The two methyl-phenyl groups have a cis relationship with a C-Pt-C bond angle of 88.54 (18)° and a dihedral angle between the mean planes of the benzene...

A complete characterization of locally primitive normal Cayley graphs of metacyclic groups is given. Namely, let Γ = Cay(G,S) be such a graph, where G ∼= Zm.Zn is a metacyclic group and m = p1 1 p r2 2 · · · p rt t such that p1 < p2 < · · · < pt. It is proved that G ∼= D2m is a dihedral group, and val(Γ ) = p is a prime such that p|(p1(p1 − 1), p2 − 1, . . . , pt − 1). Moreover, three types of ...

In the title complex, cis-[PtCl(4)(C(3)H(4)N(2))(2)], the Pt(IV) ion lies on a twofold rotation axis and is coordinated in a slightly distorted octa-hedral geometry. The dihedral angle between the imidazole rings is 69.9 (2)°. In the crystal, mol-ecules are linked by N-H⋯Cl hydrogen bonds, forming a three-dimensional network.

In the title complex, [Pt(NCS)(2)(C(10)H(9)N(3))], the Pt(II) ion is four-coordinated in a distorted square-planar environment by the two pyridine N atoms of the chelating di-2-pyridyl-amine (dpa) ligand and two mutually cis S atoms from two linear thio-cyanate anions. The dpa ligand is not planar, the dihedral angle between the pyridine rings being 30.8 (4)°. In the crystal, the complex mol-ec...