“…1 While several mononuclear dppm-type complexes have found remarkable applications in homogenous catalysis, 2,3 the chelating dppm ligand(s) are generally considered as spectators with the notable exception of the efficient chirality induction brought by P-chirogenic derivatives. 4 Since the pioneering work of Shaw, 5 it is well known, however, that the CH2 bridge of chelating dppm can be readily deprotonated to generate anionic bis [diphenylphosphino]methanide (dppm − ) scaffold (Scheme 1, (a)). The nucleophilic character of the bridging carbon atom in such species has later been exploited for the preparation of various bridge-functionalized dppm derivatives 5,6 (Scheme 1, (b)) or bi-or polymetallic compounds 7 (Scheme 1, (c)).…”