One-dimensional metal-azido complex constructed by a double EO azido bridged trinuclear nickel(II) unit: synthesis, structure and magnetic properties

The hydrothermal reaction of Ni(NO3)(2)center dot 6H(2)O, NaN3 phenanthroline and nicotinic acid yielded a one-dimensional (1D) complex, [Ni-1.5(N-3)(2)(phen)(nic)](n) (1) (phen = phenanthroline, nic = nicotinate), which is a new example of the named orbital countercomplementarity-like complex. In 1, the nicotinate shows mu(3)-nic-N, O, O coordination mode, and the azide groups adopt mu(1,1) bridging mode linking Ni-II ions to form a rare trinuclear Ni-II unit bridged by a double mu(1,1) azido.