Heterometallic Pb-Mn �-diketonates have been isolated by several synthetic methods that include solid-state and solution approaches. Two compounds with different Pb:Mn ratios, PbMn2(hfac)6 (1) and PbMn(hfac)4 (2) (hfac = hexafluoroacetylacetonate), can be obtained in quantitative yield by using different starting materials. The heterometallic structures are held together by strong Lewis acid-base interactions and remain intact upon sublimation-deposition procedures as well as in solutions of noncoordinating solvents. For the first time, it has been shown that heterometallic �-diketonates can be utilized as single-source precursors for the synthesis of mixed-metal oxides. Decomposition of compounds 1 and 2 at different temperatures and annealing times affords a variety of Pb-Mn oxides. The phase that has been previously reported as �Pb0.43MnO2.18� was synthesized in its pure form by decomposition of 1 and crystallographically characterized. Besides that, the existence of a previously unknown lead-manganese oxide was unambiguously confirmed at low temperature decomposition and short annealing times.

Heterometallic Pb-Mn diketonates as single-source precursors for the synthesis of mixed-metal oxides

239th National Meeting (2010)

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