INFRARED SPECTRAL PROPERTIES OF CATION-RADICAL SALTS OF MONO-HYDROXYMETHYL AND BIS-HYDROXYMETHYL SUBSTITUTED ETHYENEDITHIO-TETRATHIAFULVALENE (TTF)

IR spectral studies of the cation-radical salts of mono- and bis-hydro xymethyl substituted ethylenedithio-tetrathiafulvalene were performed as a function of temperature. the information on the phase transitions were obtained from temperature variations of the absorption band inte nsities. The phase transition in the salt (D1)2ClO4 was found. The sta bilizing role of the hydrogen bonds in the salts D2-ClO4 and D2-PF6 wa s observed. It was also stated that a subtle chemical modification of the donor framework distinctly changes the structure and physical prop erties of the salts. IR and Raman spectra of the donors have been desc ribed.