The mixed-valence molecule (SnSnIV)-Sn-II((OPr)-Pr-i)(6) is conveniently synthesized and is shown to exchange bridging and terminal alkoxides in solution in its Sn(mu-(OPr)-Pr-i)(3)Sn((OPr)-Pr-i)(3) structure. Pb3SnO((OPr)-Pr-i)(8) is synthesized and shown to undergo an intramolecular fluxional process in solution. Both molecules are sufficiently volatile for CVD study, and comparison of CVD behaviors of these and of M((OPr)-Pr-i)(2) (M = Sn, Pb), Sn((OPr)-Pr-i)(4), SnZr((OPr)-Pr-i)(6), and Pb3- ZrO((OPr)-Pr-i)(8) shows the reducing capacity of the isopropoxide moiety dominates the thermolytic behavior of all these species, giving metallic Sn or Pb in all cases. Only Zr, when it is present, forms ZrO2. The oxide in Pb3SnO((OPr)-Pr-i)(8) yields PbO (and 2 Pb-O and 1 Sn-O), in contrast to the relative electropositivity of Sn and Pb, a fact attributed to kinetic control of CVD behavior.