FORMATION OF VANADIUM-ARENE COMPLEX ANIONS AND THEIR PHOTOELECTRON-SPECTROSCOPY

Vanadium-arene complex anions, V-1(arene)(m)(-) (m = 1, 2; arene = ben zene, fluorobenzene, and toluene) were synthesized by the gas phase re action of laser vaporized metal atoms with aromatic compound vapors. A ccording to the 18-electron rule, it was anticipated that bis(benzene) vanadium should be stabilized by an electron attachment. However, it w as experimentally concluded that bis(benzene)vanadium has negative ele ctron affinity. The photoelectron spectra for the observed complex ani ons were measured, and the electronic configurations of metal-arene co mplexes and their structures are discussed.