Mixed-metal cluster chemistry. 39. Syntheses and X-ray structures of Mob>3b>Irb>3b>(μb>4b>-η2-CO)(μb>3b>-CO)(CO)b>10b>(η5-Cb>5b>Hb>5b>)b>3b> and Mob>3b>RhIrb>3b>(μ-CO)b>4b>(CO)b>7b>(η5-Cb>5b>Hb>5b>)b>3b>(η5<
Edge-bridged trig. bipy. Mo3Ir3(μ4-η2-CO)(μ3-CO)(CO)10(η5-C5H5)3 (1) was obtained. Bicapped trig. bipy. Mo3RhIr3(μ-CO)4(CO)7(η5-C5H5)3(η5-C5Me5) (2) was obtained from 1. Differing electron counts of 2 and W3Ir4(μ-H)(CO)12(η5-C5H5)3 (3) were rationalized.