sodium hexaflorophosphate   、                                                                                      
[Cr(6-methyl-2,4-heptanedioneato)2(H2O)2]BF4   、                                                                                      
2-(2'-pyridyl)-4,4,5,5-tetramethyl-4,5-dihydro-1H-imidazolyl-3-oxide-1-oxyl                                                                                                                                                                                              以
                                                                                         
乙腈                                                                                  为溶剂,
                                                                                                                                                                                        以65%的产率得到[Cr(6-methyl-2,4-heptanedioneato)2(2-(2'-pyridyl)-4,4,5,5-tetramethyl-4,5-dihydro-1H-imidazolyl-3-oxide-1-oxyl)][PF6]