Structural characterization and spectroscopic study of charge transfer of two polymorphs of complex(TTF)3(TNF)2,where TTF=tetrathiafulvalene and TNF=2,4,7-trinitro-9-fluorenone

摘要

Two polymorphs,alpha and beta,for the charge-transfer complex(TTF)3(TNF)2,with TTF=tetrathiafulvalene and TNF=2,4,7-trinitro-9-fluorenone,have been characterized by X-ray diffraction and infrared spectroscopy.A structural modification of the TNF moiety allows different packing structures.An estimation of the degree of charge transfer establishes that delta_(beta)>delta_(alpha)approx=0,a feature consistent with crystalline structures.