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IR spectra of H(H2O)n+ cations in water-saturated DCE: black, n = 5.5; green, n = 6.0; red, n = 6.5; blue, N = 8.2. The anion is {CCD}− in the black, green and red spectra, {I11}− in the blue. In the inset, the difference of the spectra with n = 8.2 and 5.5 is given to show with higher certainty the appearance of the δH2O band at 1634 cm−1 of the water molecules of type (iii) in cation VI.
