The galvanostatic reaction of the [4,5-bis(2-pyridyl-N-oxidemethylthio)]-4',5'-methyldithiotetrathia fulvalene ligand with lanthanide ions in the presence of hexafluorophosphate (PF6-) anions afforded the highest-nuclearity lanthanide clusters decorated by tetrathiafulva, lene-based ligands thanks to the original partial hydrolysis of the PF6- anions in difluorodioxophosphate (PO2F2-) bridging ligands.