[Fe3NdO2(CCl3COO)8(H2O)(THF)3]THF | 1193344-40-9

• 英文名称: [Fe3NdO2(CCl3COO)8(H2O)(THF)3]THF
• CAS: 1193344-40-9
• 化学式: C₄H₈O*C₂₈H₂₆Cl₂₄Fe₃NdO₂₂
• 分子量: 1949.26
• InChiKey: WAYCRFSEOYDLAG-UHFFFAOYSA-F

反应信息

• 作为产物：
  描述：

  neodymium(III) nitrate hexahydrate 、 [Fe2BaO(trichloroacetate)6(tetrahydrofuran)6] 以 丙酮 为溶剂， 以60%的产率得到[Fe3NdO2(CCl3COO)8(H2O)(THF)3]THF
  参考文献：
  名称：

  The synthesis, structural characterization, magnetochemistry and Mössbauer spectroscopy of [Fe3LnO2(CCl3COO)8H2O(THF)3] (Ln=Ce, Pr, Nd, Sm, Eu, Gd, Tb, Dy, Ho, Lu and Y)

  摘要：

  The new tetranuclear complexes [Fe(3)Ln(mu(3)-O)(2)(CCl3COO)(8)(H2O)(THF)(3)]center dot THF (Ln = Ce-III (1), Pr-III (2), Nd-III (3)) and [Fe(3)Ln(mu(3)-O)(2)(CCl3COO)(8)(H2O)(THF)(3)]center dot THF center dot C7H16 (Ln = Sm-III (4), Eu-III (5), Gd-III (6), Tb-III (7), Dy-III (8), Ho-III (9), Lu-III (10) and Y-III (11)) have been prepared. All compounds were prepared by the reaction between [Fe2BaO(CCl3COO)(6)(THF)(6)] and the corresponding Ln(III) nitrate salt. The crystal structures of 1-4, 8 and 9 have been determined; these isostructural molecules have a non-planar {Fe(3)Ln(mu(3)-O)(2)} "butterfly" core. Magnetic susceptibility measurements show dominant intramolecular antiferromagnetic exchange interactions for all the complexes. Fe-57 Mossbauer spectroscopy shows three different environments for the Fe-III metal ions, all in their high-spin state S = 5/2 (confirming that no electron transfer from Ce-III to Fe-III occurs in 1). At the time scale of the Mossbauer spectroscopy (about 10(-7) s), evidence of magnetization blocking, i.e. slow relaxation of the magnetization, is observed below 3 K for 7, which was confirmed by ac susceptibility measurements. (C) 2009 Elsevier Ltd. All rights reserved.

  DOI：

  10.1016/j.poly.2009.06.025