SYNTHESIS, MOLECULAR AND CRYSTAL-STRUCTURES OF ARENE DERIVATIVES OF [RU6C(CO)17]

The complexes [Ru6C(CO)14(eta6-C6H4Me2-1,3)] 1, [Ru6C(CO)14(eta6CH3Et3-1,3,5)] 2 and [Ru6C-(CO)14(mu3-eta2:eta2:eta2-C16H16)] 3 have been prepared from the reaction of [Ru3(CO)12] and the appropriate arene. The molecular and crystal structures of the three derivatives have been established by single-crystal X-ray diffraction studies. Complexes 1 and 2 carry the arene fragment bound in a terminal fashion. Crystalline 1 contains two independent molecules showing different rotameric conformations of the xylene ligands. The [2.2]paracyclophane complex 3 provides the first example of a mono(arene) derivative of [Ru6C(CO)17] to contain the mu3-eta2:eta2:eta2-bonding mode. The molecular organization in the crystal structures of 1, 2 and 3 was also determined.