Stereochemistry and bonding of the tris(benzene)tricobalt dicarbonyl monocation, [Co3(.eta.6-C6H6)3(.mu.3-CO)2]+: a comparative analysis of its 48-electron Co3(CO)2 core with the 46-electron Co3(CO)2 core of Co3(.eta.5-C5Me5)3(.mu.3-CO)2 and resulting electronic implications |