title: trans-Dichloridotetra-pyrazine-ruthenium(II) dichloro-methane disolvate.
abstract: In the title compound, [RuCl(2)(C(4)H(4)N(2))(4)]·2CH(2)Cl(2), the Ru(II) atom occupies a position of 222 symmetry and the C atom of the solvent mol-ecule occupies a site with twofold symmetry. The Ru(II) atom has a slightly distorted octa-hedral geometry. The pyrazine rings are propeller-like and rotated 45.1 (1)° from the RuN(4) plane. In the crystal, the complex and solvent mol-ecules are bridged by weak C-H⋯N hydrogen bonds along the c axis. Weak inter-molecular C-H⋯Cl contacts link the complexes in the ab plane, forming a network.
authors.forename: Vladimir N
authors.initials: VN
authors.lastname: Nesterov
authors.forename: Wajiha
authors.initials: W
authors.lastname: Khan
authors.forename: Alexandra E
authors.initials: AE
authors.lastname: Rangel
authors.forename: Bradley W
authors.initials: BW
authors.lastname: Smucker