in dichloromethane To a soln. of (C5Me5)2Fe2S4 in CH2Cl2 a soln. of {Cp2Fe}{PF6} in CH2CL2 was added. The mixt. was stirred for 30 min at room temperature.; The solvent was evaporated. The resulting powder was extd. with toluene to give a green-brown residue, which was washed with small amts. of CH2Cl2. The residue was dried under vacuo. Recrystn. from acetone/ether 10:1 (-25°C).;

in dichloromethane To a soln. of (C5Me5)2Fe2S4 in CH2Cl2 a soln. of Cp2Fe(1+)*BF4(1-) in CH2Cl2 was added. The mixt. was stirred.; The solvent was evaporated. The resulting powder was extd. with toluene and then washed with CH2Cl2 and dried under vacuo. Recrystn. from CH2Cl2. Elem.anal.;