Tris(propane-1,2-diamine-κ2 N,N′)nickel(II) tetra­cyanidonickelate(II)

The title compound, [Ni(C3H10N2)3][Ni(CN)4], is built up of [Ni(pn)3]2+ cations (pn is 1,2-diamino­propane) and [Ni(CN)4]2− anions. Both NiII atoms in the cation and the anion lie on a mirror plane. The respective ions inter­act through Coulombic forces and through a complex network of hydrogen bonds. Extended disorder associated with the cation has been resolved. The occupancies of the respective disordered positions are 0.4:0.4:0.2

Bis(2,2′-bipyridine-κ2 N,N′)(maleato-κ2 O 1,O 1′)nickel(II) 7.34-hydrate

The title compound, [Ni(C4H2O4)(C10H8N2)2]·7.34H2O, was obtained by crystallization from an aqueous ethano­lic reaction mixture containing nickel(II) acetate, maleic acid, bipyridine, sodium hydroxide and ammonia. The asymmetric unit contains one independent complex mol­ecule and 7.34 water mol­ecules occupying eight crystallographically independent positions. Two of these water molecules are disordered. The nickel(II) atom is coordinated in a distorted octa­hedral geometry by two O atoms from one carboxyl­ate group of the maleato ligand and by four N atoms from two 2,2′-bipyridine (bipy) ligands. The water mol­ecules, along with the O atoms of the uncoordinated carboxyl­ate group, form an extended hydro­philic three-dimensional hydrogen-bonded system with large cavities in which the hydro­phobic bipy ligands are located. One H atom of the maleate ligand is involved in a weak hydrogen bond of the C—H⋯O type. Stacking inter­actions between the pyridyl rings of the bipy ligands [centroid–centroid distance = 3.549 (15) Å] lead to the formation of pairs of complex mol­ecules

Binuclear cyanido complexes containing [Pt(CN)4]2 building block: Synthesis, crystal structures, magnetic properties and anticancer activities

Five new complexes of composition [Ni(N-bishydeten)Pt(CN)4] (1), [Ni(N-bishydeten)2][Pt(CN)4] (2), [Cu (N-bishydeten)Pt(CN)4] (3), [Cu(N-bishydeten)2][Pt(CN)4] (4) and [Cd(N-bishydeten)2][Pt(CN)4] (5) {Nbishydeten = N,N-bis(2-hydroxyethyl)-ethylenediamine} have been obtained and characterized by IR and EPR spectroscopies, elemental and thermal analysis and magnetic measurements. X-ray studies of 2 and 3 exhibited different structures and two different coordination modes of N-bishydeten ancillary ligand with a ratio of M:L. While N-bishydeten acts as a tetradentate with N, N0 , O and O0 atoms in a molar ratio of 1:1 formed 2,2-CT-type zigzag chain for 3, it behaves tridentate ligand by ending up with six coordinated NiII center in a complex salt by using 1:2 Mratio for 2. None of the 1 and 3 complexes produced in this study showed sufficient anticancer activity but all did exhibit apoptotic properties and one of them also performed low cytotoxic activity against cell tested.TUBITAK, Grant TBAG-104T205), The Research Foundation of Gaziosmanpas a University (Grant 2010/110) The Scientific Research Project Fund of Tunceli University (Grant MFTUB014-05