Diagonally Related s- and p-Block Metals Join Forces: Synthesis and Characterization of Complexes with Covalent Beryllium–Aluminum Bonds

Albert Paparo, Cory D. Smith, Cameron Jones

Research output: Contribution to journalArticleResearchpeer-review

6 Citations (Scopus)

Abstract

Additions of beryllium–halide bonds in the simple beryllium dihalide adducts, [BeX2(tmeda)] (X=Br or I, tmeda=N,N,N′,N′-tetramethylethylenediamine), across the metal center of a neutral aluminum(I) heterocycle, [:Al(DipNacnac)] (DipNacnac=[(DipNCMe)2CH], Dip=2,6-diisopropylphenyl), have yielded the first examples of compounds with beryllium–aluminum bonds, [(DipNacnac)(X)Al-Be(X)(tmeda)]. For sake of comparison, isostructural Mg–Al and Zn–Al analogues of these complexes, viz. [(DipNacnac)(X)Al-M(X)(tmeda)] (M=Mg or Zn, X=I or Br) have been prepared and structurally characterized. DFT calculations reveal all compounds to have high s-character metal–metal bonds, the polarity of which is consistent with the electronegativities of the metals involved. Preliminary reactivity studies of [(DipNacnac)(Br)Al-Be(Br)(tmeda)] are reported.

Original languageEnglish
Pages (from-to)11459-11463
Number of pages5
JournalAngewandte Chemie - International Edition
Volume58
Issue number33
DOIs
Publication statusPublished - 12 Aug 2019

Keywords

  • aluminum
  • beryllium
  • DFT calculations
  • low oxidation state
  • metal–metal bonding

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