Synthesis, spectroscopic characterization and radiosensitizing properties of acetato-bridged copper(II) complexes with 5-nitroimidazole drugs

► We prepared novel acetato-bridged dinuclear copper complexes with 5-nitroimidazoles. ► Compounds were spectroscopically and magnetically characterized. ► Compounds were tested for radiosensitizer activity for Hep2 cell line in vitro. ► Complexes show antiferromagnetic behavior and radiosensitizer activity. ► Best radiosensitization enhancement upon Cu(II) binding is found for nimorazole.