Front Cover: A Remarkable Ring Opening Observed in the Reaction of Cyclopropyl Ferrocenyl Thioketone with Triiron Dodecacarbonyl Fe ₃ (CO) ₁₂ (Eur. J. Inorg. Chem. 36/2022)

The Front Cover shows the radical-mediated ring opening process of a cyclopropyl group resulting in a homoallyl radical, which is illustrated by the blossoming of the flowering plant Cirsium arvense, typical at this time of year in some regions of Europe. Based on a proposed reaction mechanism, this is the crucial and initial step in the reaction of cyclopropyl ferrocenyl thioketone with triiron dodecacarbonyl (Fe3(CO)12) as Fe0 precursor, accompanied by oxidation of a [Fe0] unit to [FeI]. In a follow-up bifurcating cascade, the reaction leads to two different iron carbonyl complexes with ring-opened fragments, a mononuclear η4-1-thia-1,3-diene-type species and a dinuclear η2-acyl-type compound. Cover designed by P. Buday. More information can be found in the Research Article by G. Mlostoń, W. Weigand and co-workers.