Paper Title:
Evaluation and X-Ray Induced Modification of the Cerium Oxidation State in Cerium Calixarene Complexes
  Abstract

The cerium oxidation state in novel calixarene-supported cerium(IV) β-diketonate complexes [p-tBu-calix[4](OMe)2(O)2]Ce(acac)2 (1) and [p-tBu-calix[4](OMe)2(O)2]Ce(hfac)2 (2), which are a new class of potential precursors for homogeneous oxidative transformations, has been determined using X-ray photoelectron spectroscopy (XPS). Cerium oxidation states between 3.6 and 3.65 were detected, distinctly different from their nominal value of +4. An X-ray induced photoreduction of these compounds was detected. Because of the observed stability of the X-ray modified oxidation state under ambient conditions this effect might be used for a long-standing fine tuning of the Ce oxidation state in cerium calixarenes.

  Info
Periodical
Solid State Phenomena (Volume 128)
Main Theme
Edited by
Witold Łojkowski and John R. Blizzard, Urszula Narkiewicz and Janusz D. Fidelus
Pages
115-120
DOI
10.4028/www.scientific.net/SSP.128.115
Citation
Y. Suchorski, J. Gottfriedsen, R. Wrobel, B. Strzelczyk, H. Weiss, "Evaluation and X-Ray Induced Modification of the Cerium Oxidation State in Cerium Calixarene Complexes", Solid State Phenomena, Vol. 128, pp. 115-120, 2007
Online since
October 2007
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