Synthesis, Structure, and Characterizations of a Heterobimetallic Heptanuclear Complex [Pb2Co5(acac)14]

An unusual heterobimetallic volatile compound [Pb2Co5(acac)14] was synthesized by the gas phase/solid-state technique. The preparation can be readily scaled up using solution approach. X-ray powder diffraction, ICP-OES analysis, and DART mass spectrometry were engaged to confirm composition purity of complex. is unique among large family lead(tin): transition metal = 2:1, 1:1, 1:2 β-diketonates compounds that are mostly represented coordination polymers. molecular structure complex elucidated synchrotron single crystal diffraction reveal heptanuclear moiety {Co(acac)2[Pb(acac)2-Co(acac)2-Co(acac)2]2} built upon bridging interactions acetylacetonate oxygens neighboring centers bring their numbers six. appearance assembly attributed fact [Co(acac)2] units feature both cis- trans-bis-bridging modes, making polynuclear rather flexible. This type octahedral relatively known lead(tin)-3d β-diketonates. Due high-volatility, potentially applied as a MOCVD precursor for low-temperature lead-containing functional materials.