Changes in the inner coordination sphere as the primary chemical act of excited Gd3+aq

  • Marcantonatos M
  • Deschaux M
  • Vuilleumier J
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Abstract

Photoexcited Gd(OH2)3+8frees two water molecules to give*Gd(OH2)3+6in an entropy-controlled process (ΔSO∼ 9.5 cal/mol deg, ΔHO∼ 0.32 kcal/mol, ΔGO∼ -2.5 kcal/mol) and secondary excited-state processes. This inner-sphere change may be rationalised by different 4f-shell contraction and 5p-shell expansion in the lowest and excited levels of the 4f7configuration. © 1982.

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Authors

  • M. D. Marcantonatos

  • M. Deschaux

  • J. J. Vuilleumier

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