Tetra­aqua­dithio­cyanato­cobalt(II) bis­(2-methyl­pyrazine 1,4-dioxide)

In the crystal structure of the title compound, [Co(NCS)₂(H₂O)₄]·2C₅H₆N₂O₂, the six-coordinated Co^II complex lies on a special position of site symmetry 2/m. The methyl­pyrazine dioxide lies on a mirror plane and links with the Co^II complex via O—H...O hydrogen bonding.

Dibromo­bis(3-meth­oxy-2-methyl­pyrazine 1-oxide-κO)copper(II)

In the title mononuclear Cu^II complex, [CuBr₂(C₆H₈N₂O₂)₂], the Cu^II 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 Cu^II atom, with a dihedral angle of 34.60 (16)° the between the Cu/Br/Br and Cu/O/O planes.