2 (dppf) 2 (µ-S) 2 ]. X-Ray single-crystal crystallographic analysis revealed a common sulfide-bicapped triangle with insignificant Pd ؒ ؒ ؒ Pd interactions. The former is neutral with a bridging and a chelating dppf ligand as well as two terminal chlorides. The dynamic behaviour has been studied by variable temperature 31 P and 2-D COSY NMR. A phosphine-chloride interchange and phosphine-phosphine exchanges enable the two dppf ligands to migrate around the Pd 3 plane. The solid-state structure corresponds to the static structure in solution at 198 K. The mixed phosphine complex 5a (X = Cl) is ionic with two Pd-dppf chelating rings and a {Pd(PPh 3 )Cl} moiety. With a PPh 3 group taking up one site, it is stereochemically rigid. The other two complexes were studied by electrospray mass spectrometry (ESMS) in solution. The {Pd 3 S 2 } core in the mixed phosphine (X = NO 3 ) is relatively stable to fragmentation under ESMS conditions.