{'fraction_non_alphanumeric': 0.058011049723756904, 'fraction_numerical': 0.0649171270718232, 'mean_word_length': 4.451127819548872, 'pattern_counts': {'":': 0, '<': 0, '<?xml version=': 0, '>': 0, 'https://': 0, 'lorem ipsum': 0, 'www.': 0, 'xml': 0}, 'pii_count': 0, 'substrings_counts': 0, 'word_list_counts': {'cursed_substrings.json': 0, 'profanity_word_list.json': 0, 'sexual_word_list.json': 0, 'zh_pornsignals.json': 0}}
Comment on "Quasielastic neutron scattering of two-dimensional water in a vermiculite clay" [J. Chem. Phys. 113, 2873 (2000)] and "A neutron spin-echo study of confined water" [J. Chem. Phys. 115, 11299 (2001)].

We suggest that in the recent papers [J. Chem. Phys. 113, 2873 (2000)] and [J. Chem. Phys. 115, 11299 (2001)] an incorrect expression was used to obtain the diffusion coefficient of water in fully hydrated vermiculite clay from the Q dependence of the quasielastic neutron scattering data. This has led to underestimating the mean square jump length and the translational diffusion coefficient by a factor of 3. We discuss the correct way to extract the diffusion parameters and their properly estimated values.