ИСТИНА

Single crystal and powder X-ray diffraction experiments for Ce3Ir2Ge2 have confirmed the atomic order, previously reported in [1]. The compound crystallizes with La3Ni2Ga2-type of structure, space group Pbcm (No. 57), lattice parameters a = 5.7298(1), b = 8.0957(2), c = 13.4741(5) Å (single crystal diffraction experiment), and a = 5.7141(3), b = 8.0762(5), c = 13.4396(7) Å (powder diffraction experiment). The collected intensities of the single crystal experiement were subjected to the structure solving procedure using direct methods, and to the subsequent structure refinement by full matrix least-squares on F2 (1174 unique reflections,R(int) = 0.079, R(σ) = 0.0675, R1 = 0.0487 for 834 reflection with I0 > 2σ(I0), GOF = 0.891). The set of the powder diffraction experimental intensities indicated near single phase state of the specimen with small amount of secondary unknown phase. The atomic coordinates were refined in anisotropic approximation, and the suitable atomic displacement parameters were deduced. In the structure each crystallographic site is fully occupied with single sort of atoms. The calculated interatomic distances are in the range typical for the intermetallic analogs.