selenium   、                                                                                      
cyclopenta-2,4-dien-1-yl(diphenyl)phosphane;ditert-butyl-cyclopenta-2,4-dien-1-yl-sulfanylidene-λ5-phosphane;iron(2+)                                                                                                                                                                                              以
                                                                                         
氯仿                                                                                  为溶剂,
                                                                                                                                                                                        以55.1%的产率得到cyclopenta-2,4-dien-1-yl-diphenyl-selanylidene-λ5-phosphane;ditert-butyl-cyclopenta-2,4-dien-1-yl-sulfanylidene-λ5-phosphane;iron(2+)