Figure 3.

PS approach showing the structures of 3–5 determined by single-crystal X-ray diffraction which consists of two consecutive processes: first, the insertion of [Pd(NH₃)₄]²⁺ cations within the channels of 3 (a, b) to give 4 (c, d) and, second, the reduction of Pd²⁺ cations to form the Pd⁰₁ single atoms in 5 (e, f). Copper and strontium atoms from the network are represented by cyan and purple spheres, respectively, whereas organic ligands are depicted as gray sticks. Yellow and blue spheres represent S and Pd atoms (gray spheres in e represent Pd⁰ atoms). Dotted lines represent the Pd···S interactions.