Zusammenfassung
In the direction of the crystallographic c-axis Mg[Pt(CN)₄]•7H₂O has a relatively low Pt-Pt-distance (3.15 Å at 300 K). Thus the optical behavior shows inter-molecular interactions. Single crystal polarized emission and absorption spectra were measured between 300 K and 5 K. In this temperature range the emission peaks shift to the red by about 1100 cm⁻¹. This is attributed to a decrease in ...
Zusammenfassung
In the direction of the crystallographic c-axis Mg[Pt(CN)₄]•7H₂O has a relatively low Pt-Pt-distance (3.15 Å at 300 K). Thus the optical behavior shows inter-molecular interactions. Single crystal polarized emission and absorption spectra were measured between 300 K and 5 K. In this temperature range the emission peaks shift to the red by about 1100 cm⁻¹. This is attributed to a decrease in Pt-Pt-distance. Mg[Pt(CN)₄]•7H₂O undergoes phase transitions at about 166 K and 60 K. To interprete the solid state emission and absorption behavior the Davydov theory is applied. The two lowest excited bands of electronic origin are assigned to the symmetries Γ₂u(k) and Γ₅u(k) in the double group D'₈h.
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