The compounds CePdSi 2 , CeIrSi 2 and CeRhSn 2 have been synthesized and studied by X-ray diffraction, electrical resistivity and magnetic susceptibility. The magnetic susceptibility of CePdSi 2 exhibits two peaks at 6.8 K and 2.5 K, respectively, indicating two antiferromagnetic phase transitions, while that of CeIrSi 2 shows a broad maximum at 150 K, characteristic of valence fluctuating Ce-compounds. CeRhSn 2 remains paramagnetic down to 5 K. The resistivity of CeIrSi 2 exhibits a T 2 dependence at low temperatures, indicating a Fermi-liquid ground state, while those of CePdSi 2 and CeRhSn 2 shows the presence of Kondo and crystal field effects.