NMR Investigation of Tetrad Splitting in Regularly Alternating Diphenylene Oxide–Diphenylene Sulfide Copolyarylenephthalides of Periodic Structure

Мұқаба

Дәйексөз келтіру

Толық мәтін

Ашық рұқсат Ашық рұқсат
Рұқсат жабық Рұқсат берілді
Рұқсат жабық Тек жазылушылар үшін

Аннотация

Tetrad splitting of the quaternary sp3-hybridized carbon atom in a series of model (co)poly-arylenephthalides differing in the length of the phenyleneoxyphthalide (O) and phenylenethiophthalide (S) sequences: O-1, OOOS-2, OOS-3, OS-4, SSO-5, SSSO-6, S-7, and OOSS-8 has been studied using the increments method. Basing on the analysis of the amplitude values of the dyad increments, the tetrad increments have been calculated and the position of the signals of the tetrads in the 13С NMR spectra of the individual (co)polyarylenephthalides and their mixtures has been predicted. Validity of the calculations has been confirmed by the coincidence between the predicted and the experimental values of the dyad and tetrad increments for the specifically synthesized (co)polyarylenephthalide OOSS-8, the spectra of the mixtures of the (co)polyarylenephthalides with equimolar content of the split tetrads, and good coincidence of their starting compositions calculated from the deconvoluted spectra.

Авторлар туралы

V. Kraikin

Ufa Institute of Chemistry, Ufa Federal Research Center, Russian Academy of Sciences

Email: vkrajkin@mail.ru
450054, Ufa, Russia

A. Fatykhov

Ufa Institute of Chemistry, Ufa Federal Research Center, Russian Academy of Sciences

Email: vkrajkin@mail.ru
450054, Ufa, Russia

N. Gileva

Ufa Institute of Chemistry, Ufa Federal Research Center, Russian Academy of Sciences

Email: vkrajkin@mail.ru
450054, Ufa, Russia

T. Yangirov

Ufa Institute of Chemistry, Ufa Federal Research Center, Russian Academy of Sciences

Email: vkrajkin@mail.ru
450054, Ufa, Russia

S. Salazkin

A.N. Nesmeyanov Institute of Organoelement Compounds, Russian Academy of Sciences

Хат алмасуға жауапты Автор.
Email: vkrajkin@mail.ru
119991, Moscow, Russia

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© В.А. Крайкин, А.А. Фатыхов, Н.Г. Гилева, Т.А. Янгиров, С.Н. Салазкин, 2023