Abstract
Various routes to lead(II) alkoxides using PbCl 2, Pb(OAC) 2 and Pb[N(SiMe 3) 2] 2 as starting materials have been explored. The formation of homoleptic alkoxides is limited to [Pb(OBu t) 2] m , while condensation to the oxoalkoxides Pb 4O(OR) 6 or Pb 6O 4(OR) 4(R = Et, Pr i) seems favoured. The various products have been characterized by microanalysis, IR and NMR spectroscopy. [Pb(OBu t) 2] m and Pb 4O(OR) 6 are soluble precursors of lead oxide, while the tert-butoxide derivates are also volatile. Their reactivity (alcoholysis reactions, formation of complexes) has been examined and 207Pb NMR was used to follow their condensation and/or complexation.
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