Vapour-phase transport of barium β-diketonates in the deposition of oxides and the isolation and structural characterization of a novel hexameric cluster of 2,2,6,6-tetramethylheptane-3,5-dionatobarium(II)

Abstract

Studies of the growth of BaCO₃ by using the evaporative transport of Ba(thd)₂(the = 2,2,6,6-tetramethylheptane-3,5-dionate) in triethylamine (NEt₃) are reported. The novel ionic compound [Ba₆(thd)₁₀(H₂O)₄(OH)₂O₂][HNEt₃]₂(I) has been isolated from solutions used in this work. Characterization of I, by X-ray single-crystal diffraction, shows that the molecule comprises an anionic hexameric cluster of Ba, thd, water and hydroxide ions centred on a bridging peroxide with charge balancing [HNEt₃]⁺ cations in the lattice.