IR-spectra of Halogenidanil under High Pressure Metallization of Iodanil by Charge Transfer

A. Nakayama; K. Aoki; I. Shirotani

doi:10.4131/jshpreview.7.529

The Review of High Pressure Science and Technology

Online ISSN : 1348-1940
Print ISSN : 0917-639X
ISSN-L : 0917-639X

IR-spectra of Halogenidanil under High Pressure

Metallization of Iodanil by Charge Transfer

A. Nakayama, K. Aoki, I. Shirotani

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Keywords: iodanil, pressure-induced metallization, superconductivity, infrared spectroscopy, charge transfer interaction

JOURNAL FREE ACCESS

1998 Volume 7 Pages 529-531

DOI https://doi.org/10.4131/jshpreview.7.529

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Abstract

Infrared (IR) spectra of tetraiod-p-benzoquinone (iodanil) and tetrabromid-p-benzoquinone (bromanil) have been measured to 43 GPa at room temperature. Reversible spectral change below 43 GPa and softening behavior of C-I and C=0 stretching modes observed for iodanil indicate that the enlargement of charge transfer interactions of O…I and I…I between the adjacent molecules. Bromanil shows no softening behavior. Significant peak broadening takes place above 24 GPa, indicating polymerization.

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