Thick gold targets were bombarded with 47 MeV/nucleon C ions and the radioactive isotopes of iridium 12 and platinum were produced through the multi-nucleon transfer reactions. The production cross-sections of iridium isotopes in the reactions have been determined by a combination of radiochemical separation and off-line γ-ray spec- troscopy technique. The obtained Ir isotope distribution was compared with those obtained in other experiment as well as calculated by the statistical model. Thick gold targets were bombarded with 47 MeV / nucleon C ions and the radioactive isotopes of iridium 12 and platinum were produced through the multi-nucleon transfer reactions. The production cross-sections of iridium isotopes in the reactions have been determined by a combination of radiochemical separation and off-line γ-ray spec- troscopy technique. The obtained Ir isotope distribution was compared with those obtained in other experiments as well as calculated by the statistical model.