Spectroscopy of iron germanium sulfide open-framework materials and precursors

Book · Tue Dec 31 04:00:00 EST 1996

OSTI ID:462733

Kirkby, S J; Ozin, G A ^[1]

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1. Univ. of Toronto, Ontario (Canada)

The electronic and vibrational spectroscopy of one family of metal germanium sulfide open-framework materials, designated Cat{sub 2}FeGe{sub 4}S{sub 10} (Cat = (CH{sub 3}){sub 4}N, Cs), along with their precursor Cat{sub 4}Ge{sub 4}S{sub 10} germanium sulfide clusters have been studied. Ultraviolet-visible and mid-infrared reflectance spectroscopy has been used to study the electronic states. The reflectance spectroscopy of the frameworks is dominated by the d-d transitions of the Fe(II) in a S{sub 4} symmetry site. The vibrational spectroscopy has been analyzed by Fourier transform Raman. The frameworks are weakly vibrationally coupled. Their spectra contain vibrational modes that are nearly identical in frequency to those of the isolated cluster. There is a fortuitous window in the cluster vibrations in which framework modes of the Fe(II) center can be observed. In addition computational methods have been used to model the experimental results.

• Sponsoring Organization: Natural Sciences and Engineering Research Council of Canada, Ottawa, ON (Canada)
• OSTI ID: 462733
• Report Number(s): CONF-960401--; ISBN 1-55899-334-7
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
ELECTRONIC STRUCTURE
EXPERIMENTAL DATA
GERMANIUM SULFIDES
IRON SULFIDES
MEASURING METHODS
USES