Abstract
An antimony(I) compound reversibly activates a C=C double bond. As illustrated by the Sb-trampoline, the pincer-ligand-supported stibinidene is able to bind maleimides through their C=C bond and release them in solution in a dynamic equilibrium. The whole process formally relies on a well-defined SbI–SbIII redox couple that is assisted by the ligand's arms. This system, thus, exhibits a transition-metal-like reactivity, a feature that has not been described for other heavier pnictinidenes before. More information can be found in the Communication by S. Ketkov, L. Dostál et al. on page 12884.
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