Synthesis and Characterization of Organochromium Complexes fac -Cr(CO) 3 (dppe)(η 2 -C 60 ),fac/mer -Cr(CO) 3 (dppe)(η 2 -C 60 ) and fac -Cr(CO) 3 (L)(dppe) (L = PPh 3,4-MeC 5 H 4 N) †

Abstract

Reaction of fac-Cr(CO)₃(MeCN)(dppe) [dppe = 1,2-bis(diphenylphosphino)ethane] or Cr(CO)₄(dppe) with fullerene C₆₀ afforded a single isomer fac-Cr(CO)₃(dppe)(η²-C₆₀) and an isomeric mixture of fac/mer-Cr(CO)₃(dppe)(η²-C₆₀), whereas the isomer fac-Cr(CO)₃(dppe)(η²-C₆₀) reacted with Ph₃P or 4-methylpyridine to give single isomers fac-Cr(CO)₃(Ph₃P)(dppe) and fac-Cr(CO)₃(4-MeC₅H₄N) (dppe), respectively.