Late transition metal coordination chemistry and reactivity of bis(diphenylphosphino)alkylamine ligands.

摘要

The chemistry, spectroscopic and structural properties of a variety of Pd(I), Pd(II), Pt(II), Ag(I) and Fe(0) complexes of the bis(diphenylphosphino)alkylamine (dppaa: R = H; dppa or Me; dppma) ligands were investigated. This examination is part of a comparative study with the related bis(diphenylphosphino)methane (dppm) complexes of the same metals.;A series of monomeric chelated complexes of the Pt group metals were prepared in an effort to probe the geometry of the dppaa ligands chelated onto metals. The single crystal x-ray structures of Pd(;The monomeric Pd complexes serve as starting materials used to synthesize the Pd(I) dimeric complex (Pd;The solid and solution state behaviour of dimeric Ag(I) dppaa complexes of a variety of stoichiometries provides some insight into the effect of changing the amine alkyl group. The two nmr active isotopes of silver provide extra information with which to probe the solution state behaviour of these complexes through ;The deviation from expected behaviour in the iron carbonyl chemistry of the dppa ligand led to an investigation of an interesting tris-chelate complex of Fe(III). The crystal structure of this complex, Fe ((OP(Ph)