Some iodo elpasolites Cs2LiMIIII6 (MIII = Sc, Lu, Tm, Ho) and Cs2NaMIIII6 (MIII = Sc, Lu, Tm, Er) have been prepared for the first time. According to Guinier-Simon X-ray powder photographs they belong to the elpasolite type structure (cubic K2NaAlF6-type and its tetragonal distorted variety: Cs2NaMI6) or to the Cs2LiGaF6-type structure (trigonal: Cs2LiMI6). The compounds Cs2LiTmX6 (X = CI, Br, I) are further characterized by Raman spectra and magnetic susceptibilities.