Exchange of isonitrile ligands in the complex [Mo(O)Cl(CNMe)4]+ by the tetraphos ligand prP4: Stereochemical influences on the reaction course

► Exchange of isonitrile ligands in [Mo(O)Cl(CNMe)4]+ against the prP4 ligand is studied. ► The complex [Mo(O)Cl(prP4)]BPh4 is obtained and characterized. ► The exchange of all ligands with phosphines follows strict stereochemical selection rules.