Abstract
Gold-197 Mössbauer spectroscopy has been used to investigate the MAu system (M=K, Kb, Cs). Of the 1∶1 alloys RbAu and CsAu give Mössbauer spectra consistent with cubic gold environments, while (2,2,2-crypt M) Au, (M=K, Pb, Cs) all have cubic gold environments. Comparison of the isomer shifts for the crypted and uncrypted salts leads to the conclusion that in RbAu and CsAu considerable electron density is removed from the gold 5d orbitals.
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Batchelor, R.J., Birchall, T. & Burns, R.C. A comparison of the197Au Mössbauer spectra of MAu (M=K, Rb, Cs) with (2, 2, 2-crypt M) Au. Hyperfine Interact 28, 955–958 (1986). https://doi.org/10.1007/BF02061602
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DOI: https://doi.org/10.1007/BF02061602