TY - JOUR
T1 - An infrared spectroelectrochemical investigation of the ion pairing reactions of the anions and dianions of TCNE and TCNQ
AU - Khoo, S. B.
AU - Foley, John F.
AU - Korzeniewski, Carol
AU - Pons, Stanley
AU - Marcott, Curtis
PY - 1987/9/10
Y1 - 1987/9/10
N2 - The infrared spectra of the dianons of tetracyanoethylene (TCNE) and tetracyanoquinodimethane (TCNQ), generated electrochemically in acetonitrile, are dependent upon the supporting electrolyte. In particular, the C≡N stretching wavenumbers are higher in the presence of alkali metal salts than in the presence of tetraalkylammonium salts, and the magnitude of the shift is correlated with a positive shift in the half-wave potential of the second reduction wave. The shifts in wavenumber are attributed to contact ion pairing between the dianion and the alkali metal cation. No such shifts are observed for the anion radicals of TCNE and TCNQ in acetonitrile, nor for the dianion of TCNE in dimethylsulphoxide.
AB - The infrared spectra of the dianons of tetracyanoethylene (TCNE) and tetracyanoquinodimethane (TCNQ), generated electrochemically in acetonitrile, are dependent upon the supporting electrolyte. In particular, the C≡N stretching wavenumbers are higher in the presence of alkali metal salts than in the presence of tetraalkylammonium salts, and the magnitude of the shift is correlated with a positive shift in the half-wave potential of the second reduction wave. The shifts in wavenumber are attributed to contact ion pairing between the dianion and the alkali metal cation. No such shifts are observed for the anion radicals of TCNE and TCNQ in acetonitrile, nor for the dianion of TCNE in dimethylsulphoxide.
UR - http://www.scopus.com/inward/record.url?scp=25644445415&partnerID=8YFLogxK
U2 - 10.1016/0022-0728(87)85018-0
DO - 10.1016/0022-0728(87)85018-0
M3 - Article
AN - SCOPUS:25644445415
SN - 0022-0728
VL - 233
SP - 223
EP - 236
JO - Journal of Electroanalytical Chemistry
JF - Journal of Electroanalytical Chemistry
IS - 1-2
ER -