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Diagonally Related s‐ and p‐Block Metals Join Forces: Synthesis and Characterization of Complexes with Covalent Beryllium–Aluminum Bonds
Author(s) -
Paparo Albert,
Smith Cory D.,
Jones Cameron
Publication year - 2019
Publication title -
angewandte chemie international edition
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 5.831
H-Index - 550
eISSN - 1521-3773
pISSN - 1433-7851
DOI - 10.1002/anie.201906609
Subject(s) - isostructural , chemistry , metal , halide , crystallography , covalent bond , beryllium , reactivity (psychology) , alkali metal , inorganic chemistry , tetramethylethylenediamine , aluminium , bond length , medicinal chemistry , crystal structure , organic chemistry , medicine , alternative medicine , pathology
Additions of beryllium–halide bonds in the simple beryllium dihalide adducts, [BeX 2 (tmeda)] (X=Br or I, tmeda= N , N , N ′, N ′‐tetramethylethylenediamine), across the metal center of a neutral aluminum(I) heterocycle, [:Al( Dip Nacnac)] ( Dip Nacnac=[(DipNCMe) 2 CH] − , Dip=2,6‐diisopropylphenyl), have yielded the first examples of compounds with beryllium–aluminum bonds, [( Dip Nacnac)(X)Al‐Be(X)(tmeda)]. For sake of comparison, isostructural Mg–Al and Zn–Al analogues of these complexes, viz. [( Dip Nacnac)(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 [( Dip Nacnac)(Br)Al‐Be(Br)(tmeda)] are reported.