A fluorobenzene-bound dysprosium half-sandwich dication single-molecule magnet.

Dysprosium single-molecule magnets (SMMs) with two mutually -anionic ligands have shown large crystal field (CF) splitting, giving record effective energy barriers to magnetic reversal ( ) and hysteresis temperatures ( ). However, these complexes tend to be bent, imposing a transverse field that reduces the purity of the projections of the CF states and promotes magnetic relaxation. A complex with only one charge-dense anionic ligand could have more pure CF states, and thus high and .

Nucleophilic Amination of Aryl Halides with an Azanide Surrogate.

We report the development of an azanide (NH) surrogate which enables the facile conversion of electron-deficient (hetero)aryl halides into primary N-aryl amines under transition-metal-free conditions. The designed amidine reagent is easy to prepare, bench stable, and undergoes facile N-arylation under basic conditions at 40 °C. Intermediate N-aryl amidines are readily cleaved to form N-aryl amines in situ through hydrolysis or base-promoted elimination.

Transforming carbon dioxide into a methanol surrogate using modular transition metal-free Zintl ions.

Although not the only greenhouse gas, CO is the poster child. Unsurprisingly, therefore, there is global interest across industrial and academic research in its removal and subsequent valorisation, including to methanol and its surrogates. Although difficult to study, the heterogenous pnictogens represent one important category of catalytic materials for these conversions; their high crustal abundance and low cost offers advantages in terms of sustainability.