Bis(2,2':6',2''-terpyridine)cobalt(II) bis-(tricyano-methanide).

The title complex, Co(C(15)H(11)N(3))(2)(2), is built up from discrete Co(terpy)(2) cations (terpy is 2,2':6',2''-terpyridine) and C(CN)(3) anions. In the cation, the Co(II) atom is coordinated by two terpy mol-ecules, giving a distorted octa-hedral geometry. The tricyano-methanide anions are not directly coordinated to the Co(II) atom, but some weak C-H⋯N hydrogen bonds involving the terminal N atoms of the tricyaomethanide ions and the terpyridine H atoms link anions and cations building a three-dimensional network.