New phosphazene chains and ligands in complexes and clusters

Abstract

Ph₂PNP(Ph)₂P(Ph)₂NPPh₂ 1 is oxidised by S or Se to give Ph₂P(E)NP(Ph)₂P(Ph)₂NP(E)Ph₂(E = S 2, E = Se 3), endcapped by ClAu units or coordinated as a chelate with (CH₃)₂Pt; the diselenide 3 reacts with [Ru₃(CO)₁₂]via oxidative addition of Se^2– ions and expulsion of a PPh₂-group to form a novel cluster containing the [Ph₂PNP(Ph)₂NPPh₂]^– ligand which is ligated by two terminal P atoms and by one N atom.