Toluene solutions of C-60 react upon UV irradiation with Fe2S2(CO)(6)
to give C-60[S2Fe2(CO)(6)](n) where n = 1-6. C-60[S2Fe2(CO)(6)](n) whe
re n = 1-3 have been isolated and characterized. Crystallographic stud
ies of C60S2Fe2-(CO)(6) show that the S-S bond of the Fe-2 reagent is
cleaved to give a dithiolate with idealized C-2v symmetry. The additio
n occurred at a 6,6 fusion, and the metrical details show that the Fe-
2 portion of the molecule resembles C2H4S2Fe2(CO)(6). IR spectroscopic
measurements indicate that the Fe-2(CO)(6) subunits in the multiple-a
ddition species (n > 1) interact only weakly. UV-vis spectra of the ad
ducts show a shift to shorter wavelength with addition of each S2Fe2(C
O)(6) unit. Photoaddition of the phosphine complex Fe2S2(CO)(5)(PPh(3)
) to C-60 gave C-60-[S2Fe2(CO)(5)(PPh(3))](n), where n = 1-3. P-31{H-1
} NMR studies show that the double adduct consists of multiple isomers
. Photoaddition of Fe2S2(CO)(6) to C-70 gave a series of adducts C-70[
S2Fe2(CO)(6)](n) where n = 1-4. HPLC analyses show one, four, and thre
e isomers for the adducts, respectively.