Silver(I) methanesulfonate complexes containing diphosphine ligands: Spectroscopic and structural characterization

摘要

1:1 and 2:1 adducts of diphosphine ligands R_2P(R')_n PR_2 (dppm: R = Ph, R' = CH_2, n = 1; dppe: R = Ph, R' = CH_2, n = 2; dppp: R = Ph, R' = CH_2, n = 3; dppb: R = Ph, R' = CH_2, n = 4; dppf: R = Ph, R' = ferrocenyl, n = 1) with silver(l) methanesulfonate have been synthesized and characterized both in solution (~1H, ~(31)P NMR) and in the solid state (IR, single crystal X-ray structure analysis). The two different stoichiom etries have been found to depend on the molesratio of ligand to metal employed and the nature of the diphosphine ligand. In AgO_3SMe:dppp,dppb (1:1)_2, in the [Ag(P^P)_2Ag] arrays, the silver atoms are also bridged by anion oxygen atoms, in disparate fashion commensurate with the different Ag. . .Ag distances.