The ligand bis-1-(1'-diphenylphosphinoferrocenyl)phenylphosphine, triphosfer, reacts with dichlorotris-triphenylphosphineruthenium(II) to give the complex [(triphosfer)RuCl 2 ], (17), in almost quantitative yield. This complex reacts with CO at ambient temperature to afford [(triphosfer)Ru(CO)Cl 2 ]. Three related complexes, [{(η-R 2 PC 5 H 4 )Fe-μ 2 -(η-C 5 H 4 P(R')η-C 5 H 4 )Fe(η-C 5 H 4 R 2 )}RuCl 2 ], R,R'=Ph, iPr (18-20), exhibit identical chemical properties. Reaction of complexes 17-20 with excess PMe 2 Ph results in the deligation of the ferrocene ligand. The electrochemistry shows that while the diferrocenyltriphosphine ligands undergo a single two-electron oxidation, irreversible in character, complexes (17-19) exhibit two separated one-electron oxidations having features of chemical reversibility. This data suggests that while within the ligands no electronic communication exists between the two ferrocene subunits, complexation with RuCl 2 allows communication between the two ferrocenes. The single crystal X-ray structure of [(triphosfer)RuCl 2 ] has been determined.