Accumulation of Re-complex-based Catalytic Centers in Metal–Organic Cages for Photochemical CO2 Reduction/Insertion

Metal–organic cages (MOCs) composed of trinuclear zirconium clusters, Re-complex-based catalyst-incorporated linkers (Lcat), and catalyst-free linkers (L) are synthesized using varying ratios of Lcat and L ([{Cp3Zr3(μ3-O)(μ2-OH)3}4LcatnL6−n]4+ (n = 0.0–5.0, Cp = cyclopentadienyl)). Investigating the catalytic activity of the obtained MOCs revealed that the accumulation of the Re-complex-based catalytic centers affects the photochemical CO2 reduction and CO2 insertion into phenyl vinyl sulfone.