SYNTHESIS AND CHARACTERIZATION OF HEXANUCLEAR RUTHENIUM CLUSTERS CONTAINING A MU(4)-NITRENE LIGAND - CRYSTAL-STRUCTURES OF 2)(MU(4)-NH)(MU-OME)(MU(3)-ETA(2)-N(H)C(O)OME)]AND [RU-6(CO)(16)(MU-CO)(2)(MU(4)-NH)(MU-OME)(MU-NCO)]

Two hexaruthenium carbonyl clusters O)(2)(mu(4)-NH)(mu-OMe){mu(3)-eta( 2)-N(H)C(O)OMe}] 1 and [Ru-6(CO)(16)(mu-CO)(2)(mu(4)-NH)(mu-OMe)(mu-NC O)] 2 have been isolated from the pyrolysis of H2Ru3(CO)(9)NOCH3, and single-crystal X-ray structure analysis shows that both 1 and 2 have a square planar arrangement of four ruthenium atoms capped by a mu(4)-n itrene ligand, with two additional ruthenium atoms bridging two opposi te Ru-Ru edges of the square base to form a 'boat' form metal framewor k.