Abstract
In order to know the crystal structures, the compositions and the lattice constants of trichloromonofluoromethane (R-11), dichlorodifluoromethane (R-12), dichloromonofluoromethane (R-21) and monochlorodifluoromethane (R-22) hydrate, the X-ray diffraction diagrams of these hydrates were measured, and the following results were obtained:
1) The lattice constants of R-11, R-12, R-21 and R-22 hydrates were 17, 4, 17.3, 17.3 and 12.1 Å respectively.
2) It was evident that each of the R-11, R-12 and R-21 hydrates has the structure whichbe-longs to so-called structure type II and that the R-22 hydrate has the structure which belongs to so-called structure type I trans. Therefore, the former's theoretical composition was 17 H2O mol/hydrating agent mol and the latter's one was 7 2/3 H2O mol/hydrating agent mol.
