Cover Feature: Multispin Systems with a Rigid Ferrocene‐1,1′‐diyl‐Substituted 1,3‐Diazetidine‐2,4‐diimine Coupler: A General Approach (Eur. J. Org. Chem. 7/2022)

Abstract

The Cover Feature shows a beautiful sunrise metaphorically representing the boundary between chemistry and physics, the interaction of which has paved the way for the synthesis of a biradical with a ferrocene‐derived inflexible bridging moiety. This is a versatile route and could be used to prepare weakly coupled biradicals with different spin‐bearing groups and with a redox‐active ferrocene part. More information can be found in the Research Article by E. V. Tretyakov et al.

Au–Au Chemical Bonding in Nitronyl Nitroxide Gold(I) Derivatives

“…This trend is related to the synthesis and study of the properties of complexes in which a gold atom is bonded to a paramagnetic moiety. The first examples of such complexes are specific derivatives of a paramagnetic organogold unit with a phosphine ligand (PR 3 ) of the NN–Au–PR 3 type (where NN is a deprotonated nitronyl nitroxide moiety, i.e., 4,4,5,5-tetramethylimidazoline-3-oxide-1-oxyl). − It has been revealed that they have unique redox properties and can serve as an attractive cross-coupling reagent for introducing the NN group into a reaction with aryl iodides and activated aryl bromides. ,− …”