Figure 2.

Simplified illustrations demonstrating the binding modes for pnictogen-disubstituted 1,1′-ferrocenes: open- (A), quasi-closed- (B), and double-bridged complex (C); lower (D) and higher aggregated η¹, η¹-interconnected complex (E); chelated (F) and double-chelated complex (G); cyclic ((H), E’ = FcNR⁻) and multidentate chelated species ((I,J), O’ = PhO⁻, E’ = FcNR⁻); higher-aggregated species with transition metal bridges ((K), E’ = PhO⁻); tetrylene-bridged species ((L), E = carbene, silylene, stannylene, and germylene), compounds obtained via oxidation of 24 ((M), where X = F and Cl, n = 2 and 4; and (N), where X = F, Cl, ONO₂, and OClO₃). Note For the sake of simplicity, top views of the complexes are depicted for (E,K).