Journal of Cluster Science

, Volume 26, Issue 3, pp 851–862 | Cite as

Two New Methyl Viologen Halocadmium Charge-Transfer Salts with Isostructures: Visible-Light Excited Photoluminescences, Thermochromisms and Theoretical Studies

  • Hao-Hong Li
  • Peng Wang
  • Xi-Hui Chao
  • Chun-Cai Lin
  • An-Wen Gong
  • Zhi-Rong Chen
Original Paper


Two new methyl viologen halocadmium charge-transfer salts with isostructures, [(MV)(CdI4)]2·3H2O (1) and (MV)(CdI4)·H2O (2) (MV = methyl viologen, i.e., 1,1′-dimethyl-4,4′-bipyridinium), have been structurally determined. 1 and 2 consist of CdI4 2− clusters, MV2+ dications, lattice waters with isostructures, and C–H···I hydrogen bonds are presented in 1 but absent in 2, furthermore, their relative stabilities based on were investigated by DFT calculations. Both compounds display photoluminescences in the visible region under visible-light excitations, and their thermochromism effects are observed. But their photoluminescence and thermochromic behaviors differ greatly with the presence or absence of hydrogen bonds. Moreover, their absorption spectra have also been discussed.


Methyl viologen Halocadmium Photoluminescence Thermochromism 



We acknowledge support of this research by National Natural Science Foundation of China (NOS: 21271043).


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Copyright information

© Springer Science+Business Media New York 2014

Authors and Affiliations

  1. 1.College of ChemistryFuzhou UniversityFuzhouChina

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