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Title: Abnormal difference between the mobilities of left- and right-twisted conformations of C{sub 6}H{sub 12}N{sub 2} roto-symmetrical molecules at very low temperatures

We report an abnormal difference of low-temperature mobility of left-twisted and right-twisted conformations of roto symmetric molecules C{sub 6}H{sub 12}N{sub 2} (dabco) located in the same positions in crystal Zn{sub 2}(C{sub 8}H{sub 4}O{sub 4}){sub 2}⋅C{sub 6}H{sub 12}N{sub 2}. The difference between {sup 1}H NMR (Nuclear Magnetic Resonance) spin-relaxation data for left-twisted and right-twisted molecules reaches ∼3 × 10{sup 3} times at 8 K and tends to grow at lower temperatures. We argue that taking into account four-component relativistic Dirac wave functions in the vicinity of the nodal plane of dabco molecules and vacuum fluctuations due to virtual particle-antiparticle pairs can explain the changes which C{sub 6}H{sub 12}N{sub 2} conformations undergo at low temperatures.
Authors:
 [1] ;  [1] ;  [2]
  1. A.V. Nikolaev Institute of Inorganic Chemistry, Siberian Branch of the Russian Academy of Sciences, 3, Academician Lavrentiev Avenue, Novosibirsk 630090 (Russian Federation)
  2. (Russian Federation)
Publication Date:
OSTI Identifier:
22415985
Resource Type:
Journal Article
Resource Relation:
Journal Name: Journal of Chemical Physics; Journal Volume: 142; Journal Issue: 23; Other Information: (c) 2015 AIP Publishing LLC; Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
37 INORGANIC, ORGANIC, PHYSICAL AND ANALYTICAL CHEMISTRY; ANTIPARTICLES; CRYSTALS; FLUCTUATIONS; HYDROCARBONS; HYDROGEN 1; MOBILITY; MOLECULES; NUCLEAR MAGNETIC RESONANCE; ORGANIC NITROGEN COMPOUNDS; RELATIVISTIC RANGE; RELAXATION; SPIN; SYMMETRY; TEMPERATURE DEPENDENCE; VIRTUAL PARTICLES; WAVE FUNCTIONS; ZINC COMPOUNDS