Synthesis of Dumbbell-Shaped Organometallics: Synthesis of a Peralkynylated Dinuclear Cyclobutadiene Complex
                                
                                    
                                        作者:Jutta E. C. Wiegelmann-Kreiter、Uwe H. F. Bunz                                    
                                    
                                        DOI:10.1021/om00010a003
                                    
                                    
                                        日期:1995.10
                                    
                                    With a tricarbonyl(diethynylcyclobutadiene)iron complex as starting material, 7 is prepared in a stepwise fashion by a repetitive deprotonation/iodination/coupling sequence; 7 is a precursor tb the dumbbell-shaped peralkynylated organometallics 8, which are obtained by coupling of 7 with a ditin alkyne or butadiyne.