[en] The Einstein model, generalized two types of atoms, is applied to describe the shape of the neutron resonance of the nucleus, which is part of various chemical compounds of the VXsub(l)(MsUb(v) >> Msub(x)) type. Results of calculations for ²³⁸U 6.67 e.V. are compared with experimental data. The above crystal lattice model permits to describe the shape of the neutron resonance of nuclei in the crystal compound. The application of such a simple model is largely conditioned by the fact, that the resonance own width is much more than the fonon energy hsub(ν1), therefore flattening of contributions in a cross-section takes place, connected with fonon absorption or excitation. It leads to suppression of the effect of frequency spectrum structure on the cross section profile. The similar role is played by the energy excess of the nucleus output over the fonon energy, which makes the process polyfonon. The resonance shift, conditioned by the sample crystal structure depends upon adjustment range and target thickness and is described by a theoretical model rather well. It permits to separate the selected isomer shift, which does not depend upon the above parameters and upon the disguising effect of the crystal lattice