Trimethylcyclopropenyl tetrafluoroborate reacts with NaCo(CO)4 in tetrahydrofuran solution to form yellow crystalline (CH3)3C3COCo(CO)3. The NMR chemical shifts of the methyl protons support formulation of this complex as a keto-π-cyclobutenyl derivative rather than a cyclopropenylcarbonyl derivative.
三甲基环
丙烯基四
氟硼酸酯在
四氢呋喃溶液中与NaCo(CO)4反应形成黄色结晶(CH 3)3 C 3 COCo(CO)3。甲基质子的NMR
化学位移支持该配合物配制成酮-π-
环丁烯基衍
生物,而不是环
丙烯基羰基衍
生物。