Heterobimetallic molecular precursors [Ba (dmap) 4Cu4 (OAc) 6· THF](1) and [Ba (dmap) 4Cu4 (TFA) 6· THF](2)[dmap= N, N-dimethylaminopropanolate, OAc= acetate and TFA= trifluoroacetate] for the deposition of barium–copper composite oxide thin films, were prepared by the interaction of Ba (dmap) 2 with Cu (OAc) 2 for 1 and Cu (TFA) 2 for 2, in THF. Both heterobimetallic complexes were characterized by melting point, elemental ...