“…In the p-chloro complex (l), the vinylic proton appears at 4.73 p.p.m.' The mass spectra of compounds (5)- (9) show the parent ion M + and the successive loss of six molecules of CO groups, thus confirming the formulation for the thiolato complexes. Furthermore, other observed fragments in all of them are: m/z = 112 (Fe,), 144 (Fe,S), 178 (PhCCPh), 221 (Fe,SPh), and 323 (Fe,CPhCHPhS).…”