Does beta-ET2I3 really have a definite interlayer spacing?

X-ray diffractograms of conducting polycrystalline layers of beta-ET2I3 obt ained within a surface layer of polycarbonate films show only (001) reflexe s thus the comparison with single crystal data is reduced to one parameter - the spacing between the conducting layers. It is shown that beta-ET2I3, f ormed at room temperature, with larger interlayer spacing can be transforme d by annealing into the form of smaller interlayer spacing. The difference in interlayer spacing between the two states of beta phase is ca 0.07 Angst rom.