CRYSTAL-STRUCTURE AND MAGNETIC-BEHAVIOR OF A NEW KIND OF ONE-DIMENSIONAL NICKEL(II) THIOCYANATE COMPOUND [(NIL(SCN)(MU-SCN))(N)] [L=BIS(3-AMINOPROPYL)METHYLAMINE]

The mu-thiocyanato nickel(II) one-dimensional compound, [{NiL(SCN)(mu- SCN)}(n)] [L = bis(3-aminopropyl)methylamine] has been prepared. The c rystal structure of this compound has been solved by Patterson synthes is and refined by least-squares analysis to a discrepancy factor of 0. 068. The crystals are monoclinic, space group P2(1)/n, with lattice co nstants a = 11.113(3), b = 16.706(4), c = 7.802(2) Angstrom; beta = 10 6.94(3)degrees. This compound represents the first structurally descri bed nickel(II) chain in which two neighbouring nickel(II) ions are lin ked by only one SCN- bridging ligand. Magnetic susceptibility data, me asured from 290 to 4 K, show weak ferromagnetic behaviour. These data were fitted to the de Neef equation giving the parameters J = 1.12 cm( -1), g = 2.16 and D = 1.72 cm(-1).