Cover Feature: Reactivity of Diphenylberyllium as a Brønsted Base and Its Synthetic Application (Chem. Eur. J. 35/2022)

Abstract

Delicious deprotonations: The scrumptiously tantalising diphenylberyllium Brønsted‐base bratwurst can be combined with an enticing selection of Brønsted‐acid sauces to result in the formation of dreamy beryllium compounds, such as an XRD‐confirmed homoleptic beryllium alkoxide and an NHC‐stabilised beryllium Grignard. More information can be found in the Research Article by M. R. Buchner and co‐workers (DOI: 10.1002/chem.202200851).

Beryllium-centred C–H activation of benzene

“…Please do not adjust margins bonded phenylberyllium derivatives. [23][24][25][26] The respective Na-tocentroid distances [2.566, 2.449 Å] are also typical of such polyhapto Na-arene interactions, 27 while further  2 contacts [Na1-C21 1 2.783(4), Na1-C22 1 2.825( 4) Å] to an adjacent N-Dipp substituent dictate that 10 describes a 1-dimensional polymer propagated along the crystallographic a-axis. Extension of this reduction chemistry to a reaction performed between 9 and 5 wt.% Li/LiCl in C 6 D 6 heated at 100 C for 5 days also yielded a mixture of products.…”

“…1.75 Å] in other 3-coordinate and terminally-bonded phenylberyllium derivatives. [23][24][25][26] The respective Na-to-centroid distances [2.566, 2.449 Å] are also typical of such polyhapto Na-arene interactions, 27 while further Z 2 contacts [Na1-C21 1 2.783(4), Na1-C22 1 2.825(4) Å] to an adjacent N-Dipp substituent dictate that 10 describes a 1-dimensional polymer propagated along the crystallographic a-axis.…”

Gauging ambiphilicity of pseudo-halidesviaberyllium-trispyrazolylborato compounds

“…Typically only line broadening but no resolved 1 J CBe coupling is observed in beryllium organic compounds with anionic or neutral C-ligands. [32][33][34][35][36] Thus, the presence of 1 J CBe coupling is evidence for little to no dissociation of the cyanide ligand and of a strong Be-C bond. This is further supported by the lack of exchange cross peaks in EXSY NMR experiments (ESI Fig.…”

A Personal Account on Inorganic Reaction Mechanisms

“…Beryllium coordination chemistry is extremely well suited for investigation by quantum chemical computations. Even if in the last 25 years some principal investigators focused on the smallest cation and various aspects of its chemistry, [133–175] the community still suffers from a complete level of understanding.…”