Then the coupling tensors for the internal modes of the molecule have to be calculated from a complete forceconstant matrix. We do not see a solution in which the quantum-chemically calculated static densities can correctly be converted to dynamic densities.References COPPENS, P. (1969). Acta Cryst. A25, 180-186. FRITCHIE, C. J. (1966). Acta Cryst. 20, 27-38. HASE, H. L., REITZ, H. & SCHWEIG, A. (1976). Chem. Phys. Lett. 39, 157-159. HIRSHFELD, F. L. (1976). Acta Cryst. A32, 239-244. PAWLEY, G. S. (1971). Acta Cryst. A27, 80-81. REES, B. (1976). Acta Cryst. A32, 483-488. SCHERtNGER, C. (1972a). Acta Cryst. A28, 616-619. SCHERINGER, C. (1972b). Acta Cryst. A28, 516-522. SCHERINGER, C. (1973). Acta Cryst. A29, 554-570. SCHERINGER, C. (1977a Molybdenum Ke X-radiation, monochromated by an NaC1 single crystal, was scattered in 1-propanol at -25°C. The angular distribution of the scattered X-ray intensity was determined and used for the calculation of the experimental pair function. On the basis of some models of the structure of liquid 1-propanol, the theoretical curves of pair functions were calculated and then compared to the experimental curve. The most probable model of the liquid is that of statistically distributed chains of 1-propanol molecules.