1,2-Bis(diphenylphosphino)ethane-containing commo-ferracarboranes of unusual structure.

commo-Ferracarboranes and [8-{(nido-7″,8″-C2B9H11-9″(11″)-)Ph2PCH2CH2PPh2}-commo-3,3′-Fe-{1,2-C2H9B10}{1′2′-C2B9H11}] were prepared as minor products in the metallation reaction of [K]+[nido-7,8-C2B9H12]− with the 14-electron iron complex [Ph2P(CH2)2PPh2]FeCl2. The structures of the complexes were determined by single-crystal X-ray diffraction. [ABSTRACT FROM AUTHOR]