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Electronic Structure of Silver Oxides Investigated by AgL XANES Spectroscopy
Author(s) -
Behrens Peter,
Aßmann Stefanie,
Bilow Uta,
Linke Christoph,
Jansen Martin
Publication year - 1999
Publication title -
zeitschrift für anorganische und allgemeine chemie
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.354
H-Index - 66
eISSN - 1521-3749
pISSN - 0044-2313
DOI - 10.1002/(sici)1521-3749(199901)625:1<111::aid-zaac111>3.0.co;2-7
Subject(s) - xanes , chemistry , delocalized electron , spectroscopy , crystallography , physics , organic chemistry , quantum mechanics
The chemistry of binary and multinary silver oxides spans from subvalent species (with a mean oxidation number for Ag smaller than + 1) to compounds with Ag in high oxidation states as + 2 and + 3. We have investigated a range of silver oxides, including the binary compounds Ag 2 O, AgO, Ag 3 O 4 and Ag 2 O 3 as well as subvalent ternary oxides, by Ag L 3 and Ag L 1 XANES spectroscopy. The different valence states of silver are clearly reflected in Ag L 3 and Ag L 1 XANES spectra. The method thus allows the determination of average oxidation numbers. In addition, the degree of electronic interaction (localized or delocalized electronic states) in silver‐oxygen compounds can be estimated on the basis of Ag L 3 XANES spectra.