The compounds M[U(cot)(NEt2)3]1(cot =η-C8H8, M = Li or K) were prepared by (a) reaction of [U(NEt2)4] or [U(NEt2)3][BPh4] with K2(cot), (b) treatment of UCl4 with LiNEt2 and K2(cot) and (c) reaction of [U(cot)2] with LiNEt2. The compound [U(cot)(NEt2)2(thf)]2(thf = tetrahydrofuran) was synthesized by treating [U(NEt2)2Cl2] with K2(cot). Uranium(V) compounds were obtained by oxidation of 1 and 2. Treatment of 1 with TlBPh4 afforded [U(cot)(NEt2)3] which was tranformed into [U(cot)(OPri)3] by alcoholysis. Complex 2 reacted with AgBPh4 or Tl(cp)(cp =η-C5H5) to give [U(cot)(NEt2)2(thf)][BPh4] and [U(cot)(cp)(NEt2)2] respectively, the crystal structure of the first of which has been determined.
化合物 M[U(cot)(NEt2)3]1(cot =η-
C8H8,M = Li 或 K)是通过以下方法制备的:(a) [U(NEt2)4] 或 [U(NEt2)3][BPh4] 与 K2(cot)反应;(b) UCl4 与 LiNEt2 和 K2(cot)处理;(c) [U(cot)2] 与 LiNEt2 反应。化合物 [U(cot)(NEt2)2(thf)]2(thf =
四氢呋喃)是用 K2(cot) 处理 [U(NEt2)2Cl2] 合成的。通过氧化 1 和 2 得到了
铀(V)化合物。用 TlBPh4 处理 1 得到[U(cot)(NEt2)3],通过醇解将其转化为[U(cot)(OPri)3]。配合物 2 与 AgBPh4 或 Tl(cp)(cp =η-
C5H5) 反应,分别得到 [U(cot)(NEt2)2(thf)][BPh4] 和 [U(cot)(cp)(NEt2)2],其中第一个配合物的晶体结构已经确定。