Note: Anharmonicity of quasi-lattice modes in glass and super-fragile liquid states of decahydroisoqinoline: C 9H 17N

Marie Plazanet, Helmut Schober, Charles Angell

Research output: Contribution to journalArticle

Abstract

One of the most fragile of all molecular liquids, perhydronapthalene (decalin), was recently shown to have quite abnormal low frequency (quasi-lattice) vibrational modes, implying extreme anharmonicity. A molecular liquid of similar structure and fragility, but chemically suited to structural modification, has been found to lose its fragility on accepting a proton from simple mineral acids (forming a protic ionic liquid). Here we show, again by low energy neutron scattering studies, that this derivatizable liquid, decahydroisoquinoline, has the same highly anharmonic quasi-lattice characteristics as decalin (thus inviting a future comparison with the quasi-lattice character of the non-fragile derivatives).

Original languageEnglish (US)
Article number136101
JournalJournal of Chemical Physics
Volume136
Issue number13
DOIs
StatePublished - Apr 7 2012

ASJC Scopus subject areas

  • Physics and Astronomy(all)
  • Physical and Theoretical Chemistry

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