Four isostructural compounds with the formula K2[Ln(H2O)4(M(CN)4)2]Au(CN)2�2H2O (Ln = Eu, Gd; M = Pt, Pd), abbreviated KLnMAu, will be discussed. Studies of said compounds will be presented with four foci. First, Au2Pt4 or Au2Pd4 clusters within the compounds have the potential to transfer energy to either Gd3+ or Eu3+ in KLnMAu. Such potential was studied via temperature-dependent photoluminescence experiments. With Gd3+ having no visible emission, it acts as a control for energy transfer from cyanide clusters to Eu3+. Second, the difference in degree of covalency in metal-metal interactions in the Au2Pt4 vs Au2Pd4 clusters will be presented. Third, M-Au and Au-Au distances, cell volumes, and a-axis and c-axis unit cell lengths of all four compounds were recorded with X-ray diffraction. Changes in those properties with respect to change in temperature will be displayed. Finally, variable-temperature structural and photoluminescence changes will be correlated.

Variable-temperature structural changes and resultant photoluminescent effects in isostructural lanthanide cyanometallates containing Au2Pt4 and Au2Pd4 cyanide clusters

245th National Meeting (2013)

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