... Chemical Physics. Volume 178, Issues 1–3, 15 December 1993, Pages 505–514. Cover image Cover image. Study of isotope effects in the ground state of the symmetrical isotopomers of CuCl 2. ... References. [1]; JT Hougen, GE Leroi, TC James; J. Chem. Phys., 34 (1961), p. 1670 ...