Dichloro(pentamethylcyclopentadienyl)ruthenium(III) polymer, with CAS number 96503-27-4, is an organometallic coordination polymer. Its structure features a ruthenium(III) center coordinated by a pentamethylcyclopentadienyl (Cp*) ligand and two chloride ligands, which are linked into a polymeric network. This material is typically supplied as a dark solid. This ruthenium-based polymer is primarily utilized as a precursor or catalyst in materials science and synthetic chemistry. It finds significant application in the field of organic electronics and photovoltaics, where it can be used to deposit thin films of ruthenium-containing materials or to catalyze reactions for the synthesis of advanced organic semiconductors. Its polymeric nature can offer advantages in processing and film formation for device fabrication. Furthermore, due to the catalytic activity of the Ru(III)-Cp* moiety, this compound is also employed as a catalyst or catalyst precursor in various organic transformations, including oxidation and C-H activation reactions. Its stability as a polymer can facilitate handling and recovery in some catalytic processes.