Evidence for Rh(II) in a LiCl-KCl eutectic. An optical absorption investigation

Gilliams, B;Tilquin, JY.;Heerman, L;DOlieslager, J;Gorllerwalrand, C.
(1997) Chemical Physics Letters — Vol. 269, n° 5-6, p. 509-514 (1997)

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Authors
  • Gilliams, B
    Author
  • Tilquin, JY.
    Author
  • Heerman, L
    Author
  • DOlieslager, J
    Author
  • Gorllerwalrand, C.
    Author
Abstract
Rhodium exists in LiCl-KCl melts at 400-450 degrees C as the RhCl63- species. Spectroscopic data show that an increase of the temperature up to 600 degrees C leads to a reaction of this species with the melt and to the formation of the stable Rh(II) chlorocomplex. This reaction, which has not been reported previously, is reversible since on cooling to lower temperatures, 400-450 degrees C, reoxidation to the Rh(III) complex is observed. The Rh(ll) complex however persists even at these lower temperatures if the experimental cell is connected to a vacuum line to remove the chlorine formed in the reduction reaction.
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Gilliams, B., Tilquin, JY., Heerman, L., DOlieslager, J., & Gorllerwalrand, C. (1997). Evidence for Rh(II) in a LiCl-KCl eutectic. An optical absorption investigation. Chemical Physics Letters, 269(5-6), 509-514. https://doi.org/10.1016/S0009-2614(97)00300-X (Original work published 1997)