caa a22 4500 378881116 CHVBK 20180305123432.0 cr unu---uuuuu 161128e20030101xx s 000 0 eng 10.1351/pac200375070913 doi (NATIONALLICENCE)gruyter-10.1351/pac200375070913 Matsuo T. Department of Chemistry and Research Center for Molecular Thermodynamics, Graduate School of Science, Osaka University, Machikaneyama-cho 1-1, Toyonaka, Osaka 560-0043, Japan Quantum aspects of low-temperature properties of crystals: A calorimetric study in interaction with spectroscopy and diffraction [Elektronische Daten] [T. Matsuo] Some of the molecular and ionic crystals containing hydrogen undergo phase transitions only when they are deuterated. This indicates that not only the intermolecular potential energy, but also the kinetic energy of the nuclei are involved in an essential way in the mechanisms of the transitions. The quantum effects implied by these observations are discussed in terms of tunneling of protons and deuterons. Experimental evidence for deuteration-induced phase transitions and nuclear tunneling states accumulated by low temperature calorimetry, far infrared spectroscopy,and neutron diffraction is discussed. © 2013 Walter de Gruyter GmbH, Berlin/Boston Pure and Applied Chemistry De Gruyter 75/7(2003-01-01), 913-926 0033-4545 75:7<913 2003 75 pac https://doi.org/10.1351/pac200375070913 text/html Onlinezugriff via DOI 1 research article jats NATIONALLICENCE 856 40 https://doi.org/10.1351/pac200375070913 text/html Onlinezugriff via DOI NATIONALLICENCE 100 1- Matsuo T. Department of Chemistry and Research Center for Molecular Thermodynamics, Graduate School of Science, Osaka University, Machikaneyama-cho 1-1, Toyonaka, Osaka 560-0043, Japan NATIONALLICENCE 773 0- Pure and Applied Chemistry De Gruyter 75/7(2003-01-01), 913-926 0033-4545 75:7<913 2003 75 pac CC0 http://creativecommons.org/publicdomain/zero/1.0 nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-gruyter