Vidushi Vithana, Zhifang Guo, Glen Deacon, Peter Courtney Junk
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引用次数: 0
Abstract
Reactions of lanthanoid species with carbodiimides show considerable variety. Thus, treatment of the divalent 2,6-di-tert-butyl-4-ethylphenolatosamarium complex, [Sm(OArEt)2(thf)3] with N,N'-diisopropylcarbodiimide (iPrNCNiPr) resulted in the formation of the oxalamidinatosamarium(III) complex [(OArEt)₂Sm(μ-C₂N₄iPr₄)Sm(OArEt)₂]·2PhMe (1). In contrast, the use of the bulkier N,N'-dicyclohexylcarbodiimide (CyNCNCy) led to the formation of a formamidinatosamarium(III) complex [Sm(OArEt)2(CyNC(H)NCy)(thf)2]×2thf (2). Reactions between rare earth metals (RE = Yb, Eu) with one molar equivalent of bis(phenylethynyl)mercury (Hg(PhCC)2) and two molar equivalents of N,N'-dicyclohexylcarbodiimide (CyNCNCy) in tetrahydrofuran (thf) at room temperature yielded lanthanoid C-phenylethynylamidinate complexes, trivalent [YbIII{CyNC(C≡CPh)NCy}3]×2thf (3) and divalent [Eu{CyNC(C≡CPh)NCy}₂(thf)₂] (4).
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