Bi- And Trimetallic Rare-Earth-Palladium Complexes Ligated By Phosphinoamides

The synthesis of the heterometallic early-late 4d/4f bi- and trinuclear phosphinoamido Ln-Pd(0) complexes [(Ph2PNHPh)Pd{mu-(Ph2PNPh)}(3)-Ln(mu-Cl)Li(THF)(3)] (Ln = Y, Lu) and [Li(THF)(4)][{(Ph2PNHPh)Pd}(2){mu-(Ph2PNPh)}(4)Ln] (Ln = Y, Lu) is described. The latter compounds are the first early-late trimetallic phosphinoamido complexes. Although the metal atoms are forced into close proximity by the phosphinoamido ligands, quantum chemical calculations show only weak metal-to-metal interactions.