Zinc complexes of anionic NPPN and NP(S)PN ligands and rearrangement to the isomeric NPNP and NP(S)NP ligands in mercury complexes†‡
Abstract
The lithium (imido)diphosphineimide Li(Et2O)[DippNPhP–P(nBu)PhNDipp] (1) (Dipp = 2,6-iPr2C6H3) undergoes simple metathesis reactions with equimolar amounts of zinc halides, ZnCl2 and tBuZnBr, to give the respective N,N′-chelated complexes {Zn(μ-Cl)[DippNPhP–P(nBu)PhNDipp]}2 (2) and tBuZn[NDippPhP–P(nBu)PhNDipp] (3). In contrast, the reaction of two equivalents of complex 1 with HgCl2 affords the rearranged bis(imidodiphosphinoamine) complex, Hg[PhP(NDipp)(μ-NDipp)P(nBu)Ph]2 (4), where the