R. Buchner et al., LUMINESCENCE PROPERTIES OF SALTS OF THE [PT(TRPY)CL](- CRYSTAL-STRUCTURE OF [PT(TRPY)(MECN)](SBF6)(2)() AND [PT(TRPY)(MECN)](2+) CHROMOPHORES ), Inorganic chemistry, 36(18), 1997, pp. 3952-3956
The crystal structure of [Pt(trpy)(MeCN)](SbF6)(2), where trpy denotes
2,2':6',2 ''-terpyridine, shows that the platinum complex packs as a
monomer; however, the (3) pi-pi emission of the solid occur at surpris
ingly long wavelengths at room temperature. At lower temperatures new,
shorter-wavelength maxima appear. Of the known sails with the composi
tion [Pt(trpy)Cl]A, the A = SbF6- system is the lone example that exhi
bits a temperature-independent emission maximum. In these platinum(II)
terpyridines, energy migration to defects or trap sites is one of the
phenomena responsible for the temperature dependence of the solid-sta
te emission spectrum. IT trap emission is evident, the low-temperature
spectral data are most representative of the bulk material.