Dynamic Jahn-Teller effect in a Fe-N6 cage molecule

 K PADMAKUMAR and P T MANOHARAN

Department of Chemistry, Indian Institute of Technology, Chennai 600 036, India

MS received 27 May 1999

Abstract:

Mössbauer spectroscopic studies of [Fe(di(amH)-sar)](NO₃)₄.H₂O where di(amH)-star represents 1,8 diamino 3,6,10,13,16,19-hexaza bicyclo [6,6,6] icosane in the temperature range of 4.2 to 300 K suggest that it undergoes a dynamic Jahn-Teller effect as revealed from the plots of temperature dependent quadrupole coupling constant, chemical shift and line width values. The spectrum down to 4.2 K, shows a quadrupole doublet with no magnetic hyperfine splitting.

Keywords. Dynamic Jahn-Teller effect; M¨ ossbauer spectroscopy.

PACS Nos 31.30.Gs; 33.45; 76.80

 

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