摘要:
Ce(OCMe3)(2)(NO3)(2)(THF)(2) and Ce(OCMe3)(NO3)(3)(THF)(2) react with chlorotrimethylsilane in tetrahydrofuran (THF) at room temperature to form [CeCl(NO3)(THF)(5)] [CeCl5(THF)], 1, and [CeCl5(THF)(5)][CeCl5 (THF)], 2. Ce(OCMe3)(4)(THF)(2) is less reactive under the same conditions but was found to form a salt involving a [CeCl5(THF)](-) anion. Ceric ammonium nitrate, [(NH4)(2)Ce(NO3)(6)], does not form these polychlorinated species under these conditions. 1 crystallizes from THF to form an octahedral [CeCl5(THF)](-) anion and a pentagonal bipyramidal [CeCl(NO3)(THF)(5)](+) cation, which has chloride and nitrate in the axial positions. (C) 1999 Elsevier Science Ltd. All rights reserved.