1280217-69-7Relevant academic research and scientific papers
ESR study of paramagnetic derivatives of sterically hindered di-o-quinone with the tetrathiafulvalene bridge
Kuropatov,Klementieva,Poddel'sky,Cherkasov,Abakumov
, p. 1698 - 1706 (2010)
The paramagnetic derivatives of 4,4′,7,7′-tetra-tert-butyl-2, 2′-bis-1,3-benzodithiol-5,5′,6,6′-tetraone (1), viz., radical anion salts of the alkali metals (Li, Na, K) and cobaltocenium cations, chelated mono-o-semiquinone complexes with different metal fragments (Tl, TlMe 2, SnPh3, Mn(CO)4, Mn(PPh3)(CO) 3), a number of copper(I) complexes with sterically hindered phosphines as well as binuclear heterometallic derivatives of triphenylantimony(V) o-semiquinone-catecholate with the analogous paramagnetic centers, were studied by ESR spectroscopy. The reaction of di-o-quinone 1 with sodium amalgam resulted in the formation of all reduced forms including quinone-semiquinone, disemiquinone, semiquinone-catecholate, and dicatecholate. A radical cation with the unpaired electron localized on the tetrathiafulvalene (TTF) fragment, which resulted from the oxidation of di-o-quinone 1, was detected by ESR spectroscopy.
