Synthesis and characterization for(eta(2)-C-60) [Fe (CO)(2)(C5H5)](2)

The first binuclear iron fullerene derivative of (eta(2)-C-60)[Fe(CO)(2)(C5 H5)](2), which was yellow-brown and sensitive to air and moisture, was prep ared by the reaction of trans-[Fe(CO)(2)(C5H5)](2) with C-60 in benzene und er an atmosphere of dried nitrogen using conventional Schlenk techniques an d has been characterized by using elementary analysis and IR, H-1 NMR, C-13 NMR and XPS spectra. The infrared spectrum of the title compound indicates the disappearance of v(CO) at 1760 cm(-1) for bridge carbonyl and the appe arance of the only terminal CO lying at a higher wave number than that of t he starting material, which reveals the electron-deficient behavior of C-60 And the important H-1, C-13 NMR chemical shift and XPS of trans-[Fe(CO)(2) (C5H5)](2), C-60 and its novel complex along with their relative assignment s are briefly discussed.