Abstract
The title compound, [Ni(C12H8N2)(3)](2)[Ag(CN)(2)](3)(NO3)center dot 4.2H(2)O, crystallizes with two independent [Ni(phen)(3)](2+) cations (phen is 1,10-phenanthroline; both Ni atoms have threefold symmetry and N-6 donor sets), three near-linear [Ag(CN)(2)](-) anions, one nitrate anion (N site symmetry 3) and 4.2 water molecules of crystallization, some of which are disordered. The [Ag(CN)(2)](-)anions are situated within cavities created by the phenanthroline ligands of adjacent [Ni(phen)(3)](2+) cations. Some short C-H center dot center dot center dot O and C-H center dot center dot center dot N interactions may help to establish the packing.