Optical properties of a new organic metal (BEDO-TTF)5[CsHg(SCN)4]2

Polarized reflectance and optical conductivity spectra of single crystals of a new organic conductor based on the BEDO molecule, BEDO5[CsHg(SCN)4]2, were investigated in the 600–6500 cm−1 and 9000–40 000 cm−1 range for the three principal axis at 300 K. Quasi-two-dimensional character of the conducting electronic system was established. The parameters of electronic system were obtained using the Drude model. The conducting bands of the investigated conductor appeared to be narrower than those of the recently investigated superconductor with the analogous structure, (BEDO-TTF)2ReO4(H2O). An assignment of the vibrational features for all the investigated polarizations was proposed.