Various substituted (R=H, CH3, SiMe3, CO2Me, COCH3, EtMe4) (R-η5-cyclopentadienyl)[η2-bis(tert-butylsulfonyl)acetylene](carbonyl)cobalt complexes (8–13) proved to be very reactive towards alkynes under rather mild conditions. Dithiaacetylenes reacted at room temperature, dialkyl- and diarylalkynes had to be heated to 80–90 °C to yield the corresponding R-CpCo-stabilized cyclobutadiene complexes 18–37
各种取代的(R = H,CH 3,森达3,CO 2 Me中,COCH 3,EtMe 4)(R-η 5 -
环戊二烯基)[η 2 -双(叔-butylsulfonyl)
乙炔](羰基)
钴配合物(8 – 13)在相当温和的条件下被证明对
炔烃具有很好的反应性。Dithiaacetylenes在室温下反应,二烷基和diarylalkynes不得不被加热至80-90℃,得到相应的R-CpCo稳定
环丁二烯复合物18 - 37和39 - 42。X射线探查24 – 26,30,36和39 - 41显示该
环丁二烯环几乎等于CC键长。