Synthesis and characterization of Et2NM{OB[OSi(OtBu)3]2}3 (M = Zr, Hf) molecular precursors to Zr/B/Si/O and Hf/B/Si/O materials

Two new transition metal complexes containing the -OB[OSi(O'Bu)(3)](2) ligand, Et2NM{OB[OSi(O'Bu)(3)](2)}(2) (M = Zr, Hf), are reported. These species are the 4(th) and 5(th) examples of complexes containing this recently reported borosiloxide ligand. Their use as potential molecular precursors to multi-component oxide materials via the thermolytic molecular precursor (TMP) method is discussed.