“…The electron-donating –SH group is able to coordinate with metal ions, especially precious metals. 117 2,5-dimercapto-1,4-benzenedicarboxylic acid (H 2 DMBD) is a representative ligand because the carboxylate backbone can form a coordination network as a linker, while peripheral mercaptan can be chelated with TM ions as active sites. He and co-workers reported a variant of H 2 DMBD, 1,4-dicarboxylbenzene-2,3-dithiol (H 2 dcbdt), whose two mercaptans are on the same side of the central phenyl.…”