Beiträge zur Chemie des Phosphors. 233. Li3P7O3 und Li2HP7O2 – die ersten Oxido-heptaphosphane(3)

Contributions to the Chemistry of Phosphorus. 233. Li₃P₇O₃ and Li₂HP₇O₂ – the First Oxido Heptaphosphanes(3) The novel oxido heptaphosphanes(3) Li₃P₇O₃ ( 1 ) and Li₂HP₇O₂ ( 2 ) have been obtained by the reaction of trilithium heptaphosphide with cumene hydroperoxide. The compounds 1 and 2 are also formed from lithium pentaphosphacyclopentadienide and cumene hydroperoxide. They are sensitive to oxidation and are pale yellow solids whose structures have been elucidated by means of NMR and IR spectroscopic investigations. In each case, the oxygen atoms are bonded as lithiumoxido groups exocyclically to the heptaphosphanortricyclene skeleton.