摘要:
The reactions of LnI(2) (Ln = Nd (1) or Dy (2)) with cyclopentadiene (CpH) in THF at 0 degreesC afforded the CpLnI(2)(THF)(3) complexes in 65-67% yields. The reaction of thulium diiodide (3) with an excess of CpH at 60 degreesC produced CpTmI2(THF)(3), Cp2TmI(THF)(2), and TmI3(THF)(3) in 21, 58, and 63% yields, respectively. The reactions of 1 and 2 with pentamethyl-cyclopentadiene (Cp*H) in THF were accompanied by disproportionation giving rise to the CP*(2)LnI(THF)(2) and LnI(3)(THF)(x) complexes. Neodymium triiodide was isolated in the ionic form [NdI2(THF)(5)](+)[NdI4(THF)(2)](-). Its structure and the structure of CpTmI2(THF)(3) were established by X-ray diffraction analysis.