STEPWISE OPENING OF CYCLIC SUBSTITUENTS OF BIS(OXONIUM) DERIVATIVES OF IRON(II) BIS(DICARBOLLIDE) BY PYRIDINE

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Abstract

The reaction of bis(dioxane) and bis(tetrahydropyran) derivatives of iron(II) bis(dicarbollide) [8,8'-{О(СН2СН2)2X}2-3,3'-Fe(1,2-C2B9H10)2] (X = О, СН2) with pyridine in an inert atmosphere has been studied. It was found that the ring-opening of oxonium cycles proceeds stepwise, with the formation of the corresponding mono- and dipyridinium iron(II) complexes. Using the bis(dioxane) dipyridinium derivative as an example, it was found that, when in solution, oxidation of the resulting products to the corresponding paramagnetic complexes of iron(III) is possible. This approach opens the way to obtain bifunctional iron bis(dicarbolide) derivatives with different substituents. The obtained compounds were characterized by multinuclear NMR and IR spectroscopy, as well as high-resolution mass spectrometry. The structure of the symmetrical dipyridinium iron(II) complex [8,8'-{С5H5NCH2CH2OCH2CH2O}2-3,3'-Fe(1,2-C2B9H10)2] was determined by single crystal X-ray diffraction.

About the authors

E. V Bogdanova

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

Email: bogdanovakatie@mail.ru
Moscow, Russia

K. E Erdelyi

A.N. Nesmeyanov Institute of Organoelement Compounds, Russian Academy of Sciences; National Research University "Higher School of Economics" (HSE University)

Email: bogdanovakatie@mail.ru

Faculty of Chemistry

Moscow, Russia

S. A Anufriev

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

Email: bogdanovakatie@mail.ru
Moscow, Russia

K. Yu Suponitsky

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

Email: bogdanovakatie@mail.ru
Moscow, Russia

M. Yu Stogniy

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

Email: bogdanovakatie@mail.ru
Moscow, Russia

I. B Sivaev

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

Author for correspondence.
Email: bogdanovakatie@mail.ru
Moscow, Russia

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