Synthesis and structure of bis(phosphaallyl) complexes with two-co-ordinate phosphorus

The compound (2,4,6-But3C6H2)N(H)[graphic omitted](C6H2But3-2,4,6) was prepared and its crystal structure determined. It is one of the rare examples of non-symmetrically substituted cyclophosphazanes. A series of bis- and mono-phosphaallyl complexes [[graphic omitted](C6H2But3-2,4,6)}2](M = Zn or Cd), [[graphic omitted]But)2], [[graphic omitted](C6H2But3-2,4,6)}2], [[graphic omitted](C6H2But3-2,4,6)}2](R′= But or adamantyl) and [[graphic omitted](C6H2But3-2,4,6)}Me] have been prepared from cyclic aminophosphazanes and aminoiminophosphanes. The structure of the spirocyclic bis(1,3-diaza-2-phosphaallyl)zinc complex [[graphic omitted]R′)2](R = R′= C6H3Pri2-2,6) was determined.