6-butyl-2,3,4,5-tetraethyl-1-phenylethynyl-2,3,4,5-tetracarba-nido-hexaborane(6)   、                                                                                      
carbon monoxide,cobalt,cyclopenta-1,3-diene                                                                                                                                                                                              以
                                                                                         
甲苯                                                                                  为溶剂,
                                                                                                                                                                                        以73%的产率得到(eta.5-cyclopentadienyl)(η4-2,5-bis[2,3,4,5-tetraethyl-6-butyl-2,3,4,5-tetracarba-nido-hexaboranyl]-3,4-diphenylcyclopentadienone)cobalt(I)