Low frequency Raman spectroscopy of β″-(ET)2Br0.5ICl1.5 single crystals
作者： R Wojciechowski , J Ulanski , S Lefrant , E Faulques , E Laukhina
DOI: 10.1016/S0379-6779(99)00251-9
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摘要: Abstract The Raman spectra of β″-(ET) 2 Br 0.5 ICl 1.5 single crystals (where ET=bis(ethylenodithio) tetrathiafulvalene) were investigated at 25 and 80 K for the (001) crystallographic plane. comparison with β-(ET) IBr indicates presence a mixture (Br–I–Br) − , (Br–I–Cl) (Cl–I–Cl) anions in crystals. angular dependence obtained by rotating crystal π /8 fixed polarisation incident laser light confirms assignment observed bands to three different trihalide anions. It was found β″-ET that internal vibrations ET molecule are strongest very well resolved parallel [100] .
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