Syntheses and structure of heterobimetallic helical polymeric Mo–M(II) (M = Mn, Co, Zn, Cd or Ni) complexes using a flexidentate metalloligand

A series of heterobimetallic polymeric complexes of manganese, cobalt, zinc, cadmium and nickel, [M(Mo2O5L2)(MeOH)2(H2O)2]n·nH2O {M = Mn (2), n = 1, Co (3), n = 0, Zn (4), n = 1 and Cd (5), n = 1} and [Ni(Mo2O5L2)(MeOH)(H2O)3]n·2H2O·MeOH (6) have been synthesized form the reaction of [{Na4(H2O)4(μ-H2O)2} ⊂ (Mo2O5L2)2] (1) {LH2 = 2-(3,5-di-tert-butyl-2-hydroxybenzylamino)acetic acid} with the corresponding metal salts. The complexes have been structurally characterized. The Complexes, 3 and 6 undergo thermal decomposition to afford mixed oxides of the type, MMoO4·MoO3 {M = Co or Ni}.