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Heterometallic complexes have played an increasingly important role in both small molecule activation and catalysis due to the potential metal-metal synergies. The trimetallic Mg-Ni-Mg complex was found to effectively catalyze the hydrosilylation of a variety of alkenes with anti-Markonikov selectivity. Capitalizing on the Mg-Ni synergistic effect, the possible intermediates were successfully isolated, thereby deepening comprehension of the intrinsic mechanism of this catalytic system. More details are discussed in the article by Xu et al. on page 2133—2139.