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Spectroscopic analysis of the 1:1 tetracyanoquinodimethane‐9,9′‐bifluorenylidene charge‐transfer complex: Infrared, UV‐visible and resonance Raman spectra
Author(s) -
Angeloni L.,
Sbrana G.
Publication year - 1983
Publication title -
journal of raman spectroscopy
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.748
H-Index - 110
eISSN - 1097-4555
pISSN - 0377-0486
DOI - 10.1002/jrs.1250140605
Subject(s) - tetracyanoquinodimethane , raman spectroscopy , infrared , resonance (particle physics) , chemistry , analytical chemistry (journal) , resonance raman spectroscopy , charge transfer complex , infrared spectroscopy , spectral line , molecule , photochemistry , atomic physics , optics , physics , organic chemistry , chromatography , astronomy
The 1:1 TCNQ‐9,9′‐bifluorenylidene π‐complex (TCNQ=tetracyanoquinodimethane) was investigated by infrared, UV‐visible and Raman spectroscopy. Resonance Raman spectra of the solid were measured and from the analysis of the excitation profiles the lower energy electronic levels of TCNQ and 9,9′‐bifluorenylidene in the complex were identified. A blue shift of the low‐lying electronie levels of the interacting molecules was observed. The mechanisms responsible for the Raman intensity of TCNQ in the complex and in solution are discussed.