Resonant raman effect and excitation profiles of the charge-transfer molecular complexes of organic sulphides with iodine

1984 ◽  
Vol 114 ◽  
pp. 157-160 ◽  
Author(s):  
R.S. Cataliotti ◽  
G. Dellepiane ◽  
G. Paliani ◽  
S. Santini ◽  
R. Tubino
2021 ◽  
Vol 11 (2) ◽  
Author(s):  
Guru Khalsa ◽  
Nicole A. Benedek ◽  
Jeffrey Moses

2006 ◽  
Vol 71 (9) ◽  
pp. 1359-1370 ◽  
Author(s):  
Usama M. Rabie

Charge transfer (CT) complexes of 4-(dimethylamino)pyridine (DMAP) with iodine as a typical σ-type acceptor and with typical π-type acceptor, 2,3-dichloro-5,6-dicyano-1,4-benzoquinone (DDQ), have been synthesized and characterized. Octafluorotoluene (OFT), octafluoronaphthalene (OFN), perfluorophenanthrene (PFP), and 2,3,5,6-tetrafluoropyridine-4-carbonitrile (TFP) were also used as acceptors for interaction with DMAP. Properties of such CT complexes were investigated by UV/VIS and IR spectra, and elemental analyses of the isolated complexes. The systems DMAP-iodine and DMAP-DDQ are characterized by formation of triiodide ions (I3-) and DDQ•- anion radicals, respectively, which is proposed to occur via initial formation of outer-sphere CT complexes. The systems (DMAP-OFT, DMAP-OFN, DMAP-PFP and DMAP-TFP) are characterized by the appearance of new UV/VIS spectral bands assigned as CT bands; they also furnished the corresponding solid complexes with the stoichiometric ratio 1:1. 1H and 19F NMR spectra were used on confirming the formation of the DMAP-PFP CT complexes. The formation constants (KCT) and molar absorption coefficients (εCT) of the latter complex were obtained.


1999 ◽  
Vol 60 (3) ◽  
pp. 2159-2175 ◽  
Author(s):  
Zbigniew W. Gortel ◽  
Robert Teshima ◽  
Dietrich Menzel

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