High versatility of 3,4-dimethyl-1-phenyl-phosphole and 3-methyl-1-phenyl-phosphole as ligands in the reaction with [Re2(CO)8(CH3CN)2] and [Ru3(CO)12]: X-ray structures of [Re2(CO)7(η1:η2:η2-PhPC4H2Me2)], [Re2(CO)7(η1:η2:η2-PhPC4H3Me)] and [Ru2(CO)4

When 3,4-dimethyl-1-phenyl-phosphole and 3-methyl-1-phenyl-phosphole are used as ligands σ-π rhenium complexes are obtained, while with ruthenium cluster a bimetallic sandwich type complex is obtained.