Beryllium

The First Carbene Complex of a Diorganoberyllium: Synthesis and Structural Characterization of Ph2Be(i-Pr-carbene) and Ph2Be(n-Bu2O)

“…The synthesis of diphenylberyllium was first reported in 1927 by Gilman et al starting from elemental Be and Hg(C 6 H 5 ) 2 in a sealed tube at 225 °C . Various other ways to prepare diphenylberyllium have been described using different methods such as the Grignard, organolithium, or organomercury method − , Ph 2 Be(TMEDA) 2 (TMEDA = tetramethylethylenediamine), and Ph 2 Be(DME) 2 (1,2-dimethoxyethane). , Furthermore, reactivity studies of diphenylberyllium with ketones, aldehydes, and azomethine compounds were performed .…”

Synthesis,9Be NMR Spectroscopy, and Structural Characterization of Sterically Encumbered Beryllium Compounds

“…Its position as a first-row element and its relatively small size suggest a rich chemistry involving, inter alia, compounds with more covalent character than their heavier congeners or compounds that involve multiple bonding to beryllium. Although a significant degree of covalent character in many beryllium compounds is well-established, , multiple bonding has not been substantiated to any great degree. In this paper, the synthesis of several sterically encumbered arylberyllium derivatives of the terphenyl ligand −C 6 H 3 -2,6-Mes 2 (Mes = −C 6 H 2 -2,4,6-Me 3 ) is reported.…”

Iminoacylberyllium Compounds Derived from Octamethyl- and Decamethylberyllocene and 2,6-Dimethylphenyl Isocyanide. Evidence for the Existence of η5/η1Isomers of Beryllocenes

“…Since its preparation in 1959, beryllocene, Be(C 5 H 5 ) 2 , has attracted considerable attention due to the unusual, nonsymmetric η 5 /η 1 structure it possesses in the solid state. , Recently, we reported the synthesis and solid-state structure of two new beryllocenes, Be(C 5 Me 5 ) 2 ( 1 ) and Be(C 5 Me 4 H) 2 ( 2 ). In the solid state, molecules of the latter also exhibit an η 5 /η 1 structure, whereas those of the former contain two η 5 -C 5 Me 5 rings…”