The syntheses and characterization of two new copper(II) complexes [Cu(petdien)η2-O2C[(η5-C5H4)Fe(η5-C5H5)]}][BPh4] 1 and [Cu(pmdien)(H2O)η1-O2C[(η5-C5H4)Fe(η5-C5H5)]}](ClO4) 2 (petdien =
N,N,Nâ²,Nâ³,Nâ³-pentaethyldiethylenetriamine, pmdien =
N,N,Nâ²,Nâ³,Nâ³-pentamethyldiethylenetriamine) are reported. The structures of both compounds have been determined by X-ray diffraction and reveal that these complexes contain a heterodinuclear Cu(II)âFe(II) cation in which the ferrocenecarboxylato(â1) ligand acts as a chelating agent in 1 or as a monodentate group in 2. The influence of the steric effects induced by the tridentate amines in the mode of binding of the ferrocenecarboxylato group is discussed. Magnetochemical studies of these compounds are also reported.
两种新的
铜(II)配合物[Cu(petdien)δ-2-O2C[(δ-5-
C5H4)Fe(δ-5-
C5H5)]}][BPh4] 1 和[Cu(pmdien)(
H2O)δ-1-O2C[(δ-5- )Fe(δ-5- )]}](
ClO4) 2(petdien=N、N,Nâ²,Nâ³,Nâ³-
五甲基二乙烯三胺,pmdien = N,N,Nâ²,Nâ³,Nâ³-
五甲基二乙烯三胺)。通过 X 射线衍射确定了这两种化合物的结构,发现这些配合物含有异核 Cu(II)âFe(II) 阳离子,其中
二茂铁羧基(â1)
配体在 1 中起
螯合剂作用,在 2 中起单齿基作用。 讨论了三叉胺引起的立体效应对
二茂铁羧基结合模式的影响。还报告了对这些化合物的磁
化学研究。