Treatment of [SmCpâ²â²2] or [YbCpâ²â²2] with [18]-crown-6 in benzene at ambient temperature yields the X-ray characterised, crystalline salts [SmCpâ²â²([18]-crown-6)][SmCpâ²â²3]· 0.5C6H6 1 and [YbCpâ²â²([18]-crown-6)][Cpâ²â²]·3C6H6 2; 1 with K in toluene affords [K([18]-crown-6)(η2-PhMe)2]- [SmCpâ²â²3], also accessible from [SmCpâ²â²2], K[Cpâ²â²] and [18]-crown-6 in toluene [Cpâ²â² = η5-C5H3(SiMe3)2-1,3].
在环境温度下,将[SmCpâ²â²2]或[YbCpâ²â²2]与[18]-
冠醚-6一起在苯中处理,可得到经 X 射线表征的结晶盐[SmCpâ²â²([18]-
冠醚-6)][SmCpâ²â²3]Â- 0.5C6H6 1 和 [YbCpâ²â²([18]-crown-6)][Cpâ²â²]Â-3C6H6 2;1 与 K 在
甲苯中反应得到 [K([18]-crown-6)(δ-2-PhMe)2]-[SmCpâ²â²3],也可从 [SmCpâ²â²2]、K[Cpâ²â²] 和 [18]-crown-6 在
甲苯中反应得到 [Cpâ²â²=δ-5-
C5H3(SiMe3)2-1,3]。