TETRAOXOMOLBDATO AND TETRAOXOTUNGSTATO COMPLEXES OF IRON(II) DIIMINES

The interaction of tetraoxomolybdate or tetraoxotungstate with iron(II) diimines gives compounds of the type (LFeO2MO2) (L = 2,2'-bipy, 1, 10-phen; M = Mo or W). The magnetic studies suggest the presence of high spin iron(II) in the complexes. The IR spectral studies indicate the bonding of diimine to iron(II) and the bidentate nature of MO42- group ligated to iron(II). Thermal decomposition behaviour of the complexes is reported. Iron(II) and molybdenum(VI) or tungsten(VI) are bridged by dioxo groups completing tetrahedral geometry.