Mixed-valent ferrocenyltellurenyl halides. Synthesis, electrochemistry and unusual molecular structure

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• 作者：Yury Torubaev ; Pradeep Mathur ; Mohd Tauqeer ; Mobin M. Shaikh ; Goutam K. Lahiri ; Alex ; er Pasynskii ; Alina Pavlova ; Vitali Grinberg
• 关键词：Organotellurium ; Ferrocenyl ; Tellurenyl
• 刊名：Journal of Organometallic Chemistry
• 出版年：1 January, 2014
• 年：2014
• 卷：749
• 期：Complete
• 页码：115-119
• 全文大小：723 K

文摘

Halogenation of diferrocenyl ditelluride (Fc₂Te₂) allowed corresponding isostructural ferrocenyltellurenyls [FcTeX] (X=聽Cl (6), Br (7), X聽=聽I (8)). Their molecular structures in the solid state confirm them to be mixed-valent FcTe-TeX₂Fc, however, the single band in ¹²⁵Te NMR spectrum of 8 and electrochemical data suggests the monomeric [FcTeX] structure in the solution at room temperature. Remarkable bent of non-halogenated atom of Te towards the Fe atom observed in the solid state structures of 6-8, removes the Te atom from the plane of the related Cp ring (15掳-20掳) and may indicate the interaction of filled nonbonding 3d orbitals of Fe with the appropriate Te localized LUMO.