New copper(I) perfluorinated carboxylates complexes with bis(diphenylphosphine)methane

Copper(I) perfluorinated carboxylates complexes with bis(diphenylphosphine) methane (dppm) of general formula [Cu-2(mu -dppm)(3)(RCOO)(2)]. dppm, where R = C2F5, C4F9, C6F13, C8F17, C9F19, have been prepared and characterized by vibrational, P-31 CPMAS NMR and C-13 CPTOSSB NMR mass spectra in the sol id state. H-1, C-13, F-19 NMR and variable temperature P-31 NMR spectra wer e measured in solution. Temperature variable P-31 NMR spectra revealed at l east three dimeric species in equilibrium. IR and mass spectra analyses sug gest dimeric complexes with three bridging diphosphines and monodentate car boxylates in the solid state.