Spin-crossover in metal complex-promoted homogenous catalysis
Lu Huang1, Jean-Pierre Djukic1
1Laboratory of Organometallic Chemistry and Systemics, Institute of Chemistry UMR 7177/CNRS, Université de Strasbourg, Strasbourg, France.
Abstract:
Spin crossover (SCO) is a well-established phenomenon by which transition-metal complexes can reversibly switch between low- and high-spin states, a phenomenon widely studied in materials chemistry. Recently, transition metal complexes that exhibit SCO have attracted increasing attention as catalysts in chemical reactions. Combining SCO with catalysis presents a promising strategy for creating switchable catalytic systems sensitive to light, pressure, and thermal stimuli. This review briefly covers the basics of SCO studies and the primary external stimuli that influence them. The following sections examine recent research on the role of SCO in homogeneous catalytic reactions with various transition-metal complexes and highlight its impact on reaction pathways, recommending the systematic evaluation of SCO's effect on catalysis when investigating new 3d transition-metal-based catalysts.
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