PI-COORDINATION OF ORTHO-BENZOQUINONE - SYNTHESIS AND STRUCTURE OF [(RU2(ETA-4-MU-2-ORTHO-C6H4O2)(CO)4(ASPH3))2] AND [RU2(ETA-4-MU-2-ORTHO-C6H4O2)(CO)4(MU-2-I)I]

The coordination polymer prepared by treating [Ru3(CO)12] with catechol can be cleaved with either a Lewis base or iodine to give products containing eta-4-ortho-benzoquinone ligands, two of which, [{Ru2(eta-4-mu-2-o-C6H4O2)(CO)4(AsPh3)}2] and [Ru2 (eta-4-mu-2-O-C6H4O2)(CO)4(mu-2-I)I] are structurally characterized by X-ray diffraction.