Direct synthesis of linear trinuclear M2IIMnII complexes with acetate and NN donor ligands

Two novel heterometallic complexes with general formula [M2Mn(OAc)6L2], where M = Cd (1), Cu (2) and L = 2,2′-bipyridyl (bpy) for (1), 1,10-phenanthroline (phen) for (2), were obtained using “direct synthesis” approach. Trinuclear molecular structure of the complexes was determined by single crystal X-ray analysis. EPR studies of 2 indicate that the coordination environment in Cu(II) equatorial plane remains unchanged in solution as compared to the initial compound. Due to low volatility of phen the products of its decomposition probably remain on the surface of metal oxides and, therefore, in contrary to previously studied bpy-containing complexes, the compounds with phen are not suitable precursors for binary oxides preparation.

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► Heterometallic complexes [M2Mn(OAc)6L2] (M = Cd/Cu) obtained by direct synthesis.
► EPR shows that equatorial positions of Cu(II) are same in solution and solid state.
► Decomposition of Cu/Mn compound does not lead to binary oxide phases.