REACTIONS OF CARBONYL CLUSTERS WITH POTENTIALLY TRIDENTATE THIOETHERS - CRYSTAL AND MOLECULAR-STRUCTURES OF [OS4(CO)13([12]ANES3)] AND [RU6(CO)15(MU-4-ETA-2-CO)([12]ANES3)][([12]ANES3) = ((CH2)3S)3]

The reaction of [Os3(CO)12] with [12]aneS3 ([12]aneS3 = {(CH2)3S}3) in octane for 6 h, under reflux, led to isolation of two products [Os3(CO)11([12]aneS3)] (1) and [Os4(CO)13([12]aneS3)] (2), while with [Ru3(CO)12] under similar conditions, in THF, a number of products were obtained, including [Ru4(CO)11([12]aneS3)] (3), [Ru5(CO)13([12]aneS3)] (4), and [Ru6(CO)16([12]aneS3)] (5). An X-ray diffraction study of 2 shows that the macrocycle is coordinated to the 'wingtips' of an Os4 butterfly through the two electron pairs on one sulphur atom, while in 5 all three sulphur atoms of the macrocycle coordinate to two of the Ru atoms in a spiked edge-bridged tetrahedral metal framework.