Citation: Hu Nan YI, Ji Liang SHI, Zhi Hai QIU, Jia Yi XU, Xi Kui JIANG. ¹⁹F NMR Study on the Charge-Transfer Process between Ground-State Acceptor Fluoranil (or Pentafluorophenyl Carboxylate） andSome N-Alkylphenothiazine Donors[J]. Chinese Chemical Letters, ;1999, 10(10): 839-842. shu

¹⁹F NMR Study on the Charge-Transfer Process between Ground-State Acceptor Fluoranil (or Pentafluorophenyl Carboxylate） andSome N-Alkylphenothiazine Donors

Shanghai Institute of organic Chemistry Chinese Academy of Sciences 354 Fenglin Lu Shanghai 200032

Received Date: 27 May 1999

The line positions of ¹⁹F NMR absorption of fluoranil (TFQ) or pentafluorophenyl carboxylate (PFE-16) in the presence of N-alkylphenothiazine donors have been measured. By comparing the ¹⁹F chemical shift in C₆D₆ of TFQ or PFE-16 in the absence of the donor with those in the presence of the: donor. the difference of these chemical shifts was found to be large. In the presence of the donor, ¹⁹F upheld shifts of TFQ or PFE-16 have been observed. The experimental results showed that there is a charge-transfer process between TFQ or PFE-16 and the donor. When TFQ or PFE-16 accepts the charge from the donor, its ¹⁹F resonance moves upheld.
- NMR,
- charge-transfer,
- chemical shift
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