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metal-organic compounds
In the crystal structure of the title adduct, C8H12N2O2·[Zn(NCS)2(H2O)2], the organic and inorganic molecules are connected by O—H
O hydrogen bonds, with OO distances ranging from 2.640 (2) to 2.677 (3) Å. There are two independent 2,3,5,6-tetramethylpyrazine 1,4-dioxide molecules, both of which lie on crystallographic inversion centers; the asymmetric unit contains two organic half-molecules and one inorganic molecule.
O hydrogen bonds, with OO distances ranging from 2.640 (2) to 2.677 (3) Å. There are two independent 2,3,5,6-tetramethylpyrazine 1,4-dioxide molecules, both of which lie on crystallographic inversion centers; the asymmetric unit contains two organic half-molecules and one inorganic molecule.metal-organic compounds
The title mononuclear complex, [Zn(I)2(C6H7NO)2], lies on a special position of site symmetry 2. The Zn atom is coordinated by two I and two O atoms in a tetrahedral geometry. There is a π–π stacking interaction of the 4-methylpyridine N-oxide units.
metal-organic compounds
In the crystal structure of the title compound, [Co(NCS)2(H2O)4]·2C5H6N2O2, the six-coordinated CoII complex lies on a special position of site symmetry 2/m. The methylpyrazine dioxide lies on a mirror plane and links with the CoII complex via O—HO hydrogen bonding.
O hydrogen bonding.metal-organic compounds
In the title mononuclear CuII complex, [CuBr2(C6H8N2O2)2], the CuII atom assumes a tetrahedrally distorted square-planar coordination geometry. Two Br− anions and two methylmethoxypyrazine oxide ligands (mmpo) coordinate in a cis manner to the CuII atom, with a dihedral angle of 34.60 (16)° the between the Cu/Br/Br and Cu/O/O planes.
metal-organic compounds
In the title compound, [Zn(NCS)2(H2O)4]·2C5H6N2O2, the six-coordinated ZnII atom lies on a special position of site symmetry 2/m. The methylpyrazine dioxide molecule lies on a mirror plane and links with the ZnII complex via O—HO hydrogen bonding.
O hydrogen bonding.metal-organic compounds
In red crystal of the title compound, [Mn(NCS)2(C6H8N2O2)2(H2O)2]·2H2O, the MnII atom lies on an inversion centre and assumes a distorted octahedral coordination geometry. Hydrogen bonds consolidate the crystal structure.
metal-organic compounds
In the title mononuclear complex, [Cu(ClO4)2(C5H4N2O3)4], the six-coordinated CuII ion lies on an inversion centre and presents a slightly distorted octahedral geometry. A π–π stacking interaction is observed between symmetry-related pyridine rings.
