title: Diaqua-bis-[5-(pyrazin-2-yl-κN(1))-3-(pyridin-4-yl)-1H-1,2,4-triazol-1-ido-κN(1)]cobalt(II) methanol disolvate.
abstract: The Co(II) ion in the title mononuclear compound, [Co(C(11)H(7)N(6))(2)(H(2)O)(2)]·2CH(3)OH, is located on an inversion center and is six-coordinated in a distorted octa-hedral geometry defined by four N atoms from two deprotonated 5-(pyrazin-2-yl-κN)-3-(pyridin-4-yl)-1H-1,2,4-triazol-1-ide (ppt) ligands and two water mol-ecules. In the crystal, the complex mol-ecules and lattice methanol mol-ecules are linked via O-H⋯N and O-H⋯O hydrogen bonds, generating a two-dimensional supra-molecular network parallel to (001). π-π inter-actions between the triazole and pyrazine rings and between the pyridine rings are present [centroid-centroid distances = 3.686 (3) and 3.929 (4) Å, respectively].
authors.affiliation: College of Chemistry, Tianjin Key Laboratory of Structure and Performance for Functional Molecules, Tianjin Normal University, Tianjin 300387,  People's Republic of China.
authors.forename: Yan
authors.initials: Y
authors.lastname: Bi
authors.forename: Na
authors.initials: N
authors.lastname: Wu
authors.forename: Jing
authors.initials: J
authors.lastname: Chen