X-ray and neutron structure analysis of MeHPLN in the low temperature phase

R. Kiyanagi, Hiroyuki Kimura, Masashi Watanabe, Y. Noda, A. Kojima, T. Hayashide, T. Mochida, T. Sugawara, S. Kumazawa

Research output: Contribution to journalArticlepeer-review

4 Citations (Scopus)

Abstract

Structure analyses of 5-Methyl-9-hydroxyphenalenon(C14H10O2, MeHPLN) in the low temperature phase were performed by X-ray and neutron scattering experiments. It is found that the space group is P21/c with a super cell (a × 2b × c) and there are two types of molecules in the unit cell. In one of the independent molecules, hydrogen atoms in hydrogen-bond region occupy two sites as same as in the room temperature phase. On the other hand, in another independent molecules, hydrogen atoms in hydrogen-bond region clearly show ordering feature. In these ordered hydrogen atoms, there are obvious discrepancy beween electron and nuclear distribution, and hence static electrical dipolemoments exist in hydorgen-bond region with an antiferroelectric ordering.

Original languageEnglish
JournalJournal of the Korean Physical Society
Volume42
Issue numberSUPPL.
Publication statusPublished - 2003 Apr 1

Keywords

  • Isolated hydrogen-bonded system
  • Neutron diffraction
  • Structure analysis
  • X-ray diffraction

ASJC Scopus subject areas

  • Physics and Astronomy(all)

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