Butterfly Diradical Intermediates in Photochemical Reactions of Fe_2(CO)_6(mu-S_2)

摘要

One of the most interesting recent developments in inorganic main group chemistry has been the discovery of singlet diradicals that are stable under ambient conditions,including(R_2PBR')_2(Figure 1),-(RPCR')_2,and(RNGeR')_2 structures,all with four-membered A_2B_2 rings.This communication reports the first evidence for similar diradical structures in transition metal carbonyl chemistry.