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MÖSSBAUER SPECTROSCOPY OF KRYPTON COMPOUNDS

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HAL Id: jpa-00216626

https://hal.archives-ouvertes.fr/jpa-00216626

Submitted on 1 Jan 1976

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MÖSSBAUER SPECTROSCOPY OF KRYPTON

COMPOUNDS

J. Holloway, G. Schrobilgen, S. Bukshpan, W. Hilbrants, H. de Waard

To cite this version:

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JOURNAL DE PHYSIQUE Colloque C6, suppl6ment au no 12, Tome 37, De'cembre 1976, page C6-534

J. H. HOLLOWAY and G. J. SCHROBILGEN

Department of Chemistry, University of Leicester, Leicester

LEI

7RH, England and

S. BUKSHPAN (*), W. HILBRANTS and

H.

DE WAARD

Laboratorium voor Algemene Natuurkunde, University of Groningen, Netherlands

Rksum6 - Les spectres Mossbauer de KrF2 et des composes a et 8, KrF+AsFZ et KrF+SbFa, ont ete obtenus a partir de la transition a 9,3 keV de l'isotope 83- obtenu A partir d'une source

de s3RbF. Les valeurs de l'effet quadrupolaire et du dkplacement isomerique indiquent que les liaisons Kr-F sont similaires dans tous les composes BtudiCs. Une legire augmentation de I'effet quadrupolaire dans la serie KrF2, (a, 8) KrF+AsF6, KrF+SbFa peut provenir d'une reduction de la longueur des liaisons Kr-F. On a obtenu une valeur trks prkise du rapport Qex/Qgr des moments quadrupolaires dans l'6tat excite 9,3 keV et l'6tat fondamental.

Abstract. - Mossbauer spectra of KrFz and the recently synthesized compounds a-

and P-KrF+AsFg and KrF+SbFa have been measured using the 9.3 keV transition of S3Kr populated by the decay of an 83RbF source. The results for the quadrupole coupling and the isomer shifts indicate that the Kr-F bonding in all compounds studied is very similar. A slight increase of the quadrupole coupling in the sequence KrF2, (a-, P-) KrF+AsF;, KrF+SbF; can be interpreted in terms of a shortening of the average Kr-F bond length. A very accurate value, Qex/Qgr = 1.958 0 & 0.002 4 for the ratio of the quadrupole moments of the 9.3 keV state and the ground state has been derived from the measurements.

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The full text of this paper will be published in J. Chem. Phys. January 1977.

(*) On leave from Soreq Nuclear Center, Yavne, Israel.

References

[I] HOLLOWAY, J. H., Noble Gas Chemistry (Methuen, London),

1968.

[2] RUBY, S. L. and SELIG, H., Phys. Rev. 147 (1966) 348.

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