High pressure investigation of α -form and CH4 -loaded β -form of hydroquinone compounds

Yongjae Lee, Jong Won Lee, Hyun Hwi Lee, Dong Ryeol Lee, Chi Chang Kao, Taro Kawamura, Yoshitaka Yamamoto, Ji Ho Yoon

Research output: Contribution to journalArticle

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Abstract

The high pressure compression behaviors of two hydroquinone compounds have been investigated using a combination of in situ synchrotron x-ray powder diffraction and Raman spectroscopy up to ca. 7 GPa. The structural integrity of the α -form hydroquinone clathrate is maintained throughout the pressure range, whereas the CH4 -loaded β -form hydroquinone clathrate decomposes and transforms to a new high pressure phase near 5 GPa. The bulk modulus (K) and its pressure derivative (K′) of the α -form and the CH4 -loaded β -form hydroquinones are measured to be 8.2(3) GPa and 8.4(4), and 10(1) GPa and 9(2), respectively, representing one of the most compressible classes of crystalline solids reported in the literature. The corresponding axial compression behaviors, however, show greater contrast between the two hydroquinone compounds; the elastic anisotropy of the α -form is only marginal, being K (a):K (c) =1.08:1, whereas that of the CH4 -loaded β -form is rather drastic, being K (a):K (c) =11.8:1. This is attributed to the different dimensionality of the hydrogen bonding networks between the two structures and might in turn explain the observed structural instability of the β -form, compared to the α -form.

Original languageEnglish
Article number124511
JournalJournal of Chemical Physics
Volume130
Issue number12
DOIs
Publication statusPublished - 2009 Apr 8

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clathrates
elastic anisotropy
bulk modulus
integrity
synchrotrons
Raman spectroscopy
Hydroquinones
Axial compression
Structural integrity
hydrogen
Synchrotrons
diffraction
spectroscopy
Hydrogen bonds
Anisotropy
x rays
Elastic moduli
Crystalline materials
Derivatives
X rays

All Science Journal Classification (ASJC) codes

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

Cite this

Lee, Y., Lee, J. W., Lee, H. H., Lee, D. R., Kao, C. C., Kawamura, T., ... Yoon, J. H. (2009). High pressure investigation of α -form and CH4 -loaded β -form of hydroquinone compounds. Journal of Chemical Physics, 130(12), [124511]. https://doi.org/10.1063/1.3097763
Lee, Yongjae ; Lee, Jong Won ; Lee, Hyun Hwi ; Lee, Dong Ryeol ; Kao, Chi Chang ; Kawamura, Taro ; Yamamoto, Yoshitaka ; Yoon, Ji Ho. / High pressure investigation of α -form and CH4 -loaded β -form of hydroquinone compounds. In: Journal of Chemical Physics. 2009 ; Vol. 130, No. 12.
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Lee, Y, Lee, JW, Lee, HH, Lee, DR, Kao, CC, Kawamura, T, Yamamoto, Y & Yoon, JH 2009, 'High pressure investigation of α -form and CH4 -loaded β -form of hydroquinone compounds', Journal of Chemical Physics, vol. 130, no. 12, 124511. https://doi.org/10.1063/1.3097763

High pressure investigation of α -form and CH4 -loaded β -form of hydroquinone compounds. / Lee, Yongjae; Lee, Jong Won; Lee, Hyun Hwi; Lee, Dong Ryeol; Kao, Chi Chang; Kawamura, Taro; Yamamoto, Yoshitaka; Yoon, Ji Ho.

In: Journal of Chemical Physics, Vol. 130, No. 12, 124511, 08.04.2009.

Research output: Contribution to journalArticle

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AU - Lee, Jong Won

AU - Lee, Hyun Hwi

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AU - Kawamura, Taro

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AU - Yoon, Ji Ho

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