title: Bis[tris-(1,10-phenanthroline)nickel(II)] tris-[dicyanidoargentate(I)] nitrate 4.2-hydrate.
abstract: The title compound, [Ni(C(12)H(8)N(2))(3)](2)[Ag(CN)(2)](3)(NO(3))·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 mol-ecules 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⋯O and C-H⋯N inter-actions may help to establish the packing.
authors.forename: Muhammad
authors.initials: M
authors.lastname: Monim-Ul-Mehboob
authors.forename: Muhammad
authors.initials: M
authors.lastname: Tufail
authors.forename: Muhammad
authors.initials: M
authors.lastname: Altaf
authors.forename: Helen
authors.initials: H
authors.lastname: Stoeckli-Evans
authors.forename: Saeed
authors.initials: S
authors.lastname: Ahmad
authors.forename: Syed Hassan
authors.initials: SH
authors.lastname: Iftikhar