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A new divalent organoeuropium(II) fluoride and serendipitous discovery of an alkoxide complex from pentaphenylcyclopentadiene precursors

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  • معلومة اضافية
    • Contributors:
      Institute of Inorganic Chemistry; Karlsruhe Institute of Technology (KIT); Institut de Chimie Moléculaire de Reims - UMR 7312 (ICMR); Université de Reims Champagne-Ardenne (URCA)-Institut de Chimie - CNRS Chimie (INC-CNRS)-SFR CAP Santé (Champagne-Ardenne Picardie Santé); Université de Reims Champagne-Ardenne (URCA)-Université de Reims Champagne-Ardenne (URCA)-Centre National de la Recherche Scientifique (CNRS)-SFR Condorcet; Université de Reims Champagne-Ardenne (URCA)-Centre National de la Recherche Scientifique (CNRS)-Université de Reims Champagne-Ardenne (URCA)-Centre National de la Recherche Scientifique (CNRS); Ecole Nationale Supérieure de Chimie de Paris - Chimie ParisTech-PSL (ENSCP); Université Paris Sciences et Lettres (PSL); Monash University Clayton; Institut Charles Gerhardt Montpellier - Institut de Chimie Moléculaire et des Matériaux de Montpellier (ICGM); Institut de Chimie - CNRS Chimie (INC-CNRS)-Centre National de la Recherche Scientifique (CNRS)-Université de Montpellier (UM)-Ecole Nationale Supérieure de Chimie de Montpellier (ENSCM); Université de Montpellier (UM); James Cook University (JCU)
    • بيانات النشر:
      HAL CCSD
      CSIRO Publishing
    • الموضوع:
      2022
    • Collection:
      Université de Montpellier: HAL
    • نبذة مختصرة :
      International audience ; From the redox-transmetallation protolysis (RTP) reaction of europium metal, Hg(C6F5)2 andpentaphenylcyclopentadiene, we isolated and crystallographically characterised small amounts of thefirst divalent europium fluoride half-sandwich complex [Eu(C5Ph5)(μ-F)(thf)2]2 (1). Subsequently, arational synthesis of this complex from in situ formed [EuF2(thf)n] and [Eu(C5Ph5)2] was carried out.In addition, the new divalent Eu alkoxide complex [Eu(OC5Ph5*)2(thf)4] (2) (OC5Ph5* = 2,3,4,5,5pentaphenylcyclopenta-1,3-dienolate) was identified by X-ray diffraction analysis, in which anintriguing phenyl group migration in the cyclopentadiene ligand occurred. This complex wasshown to be derived from small impurities of 1,2,3,4,5-pentaphenylcyclopenta-1,3-dienol(C5Ph5OH) in the C5Ph5H starting material and was then synthesised on a larger scale. Densityfunctional theory calculations provided evidence for the facile phenyl group migration observed inthe cyclopentadienolate ring.
    • Relation:
      hal-03653823; https://hal.umontpellier.fr/hal-03653823; https://hal.umontpellier.fr/hal-03653823/document; https://hal.umontpellier.fr/hal-03653823/file/CH21324.pdf; WOS: 000773879300001
    • الرقم المعرف:
      10.1071/CH21324
    • Rights:
      http://creativecommons.org/licenses/by-nc-nd/ ; info:eu-repo/semantics/OpenAccess
    • الرقم المعرف:
      edsbas.565B09EF