New 5-n-C4H9-C2B9-Carborane Ligand and Its Ruthenium Complexes

A. M. Zimina; Зимина А. М.; T. V. Kolpakova; Колпакова Т. В.; S. A. Anufriev; Ануфриев С. А.; E. I. Zueva; Зуева Е. И.; N. V. Somov; Сомов Н. В.; I. B. Sivaev; Сиваев И. Б.; I. D. Grishin; Гришин И. Д.

doi:10.31857/S0132344X22600618

New 5-n-C4H9-C2B9-Carborane Ligand and Its Ruthenium Complexes

Authors: Zimina A.M.¹, Kolpakova T.V.¹, Anufriev S.A.², Zueva E.I.¹, Somov N.V.¹, Sivaev I.B.², Grishin I.D.¹
Affiliations:
1. Lobachevskii State University (National Research University), Nizhny Novgorod, Russia
2. Nesmeyanov Institute of Organoelement Compounds, Russian Academy of Sciences, Moscow, Russia
Issue: Vol 49, No 6 (2023)
Pages: 323-332
Section: Articles
URL: https://journals.eco-vector.com/0132-344X/article/view/667500
DOI: https://doi.org/10.31857/S0132344X22600618
EDN: https://elibrary.ru/URBOGS
ID: 667500

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Abstract

The reaction of 9-iodo-ortho-carborane with n-butylmagnesium bromide affords 9-n-butyl-ortho-carborane. The reaction of the latter with alkali in boiling ethanol gives new nido-carborane [5-Bu-7,8-C2B9H11]– (I) containing the n-butyl substituent at the lower rim of the basket. The reaction of compound I with RuCl2(PPh3)(Ph2P(CH2)4PPh2) results in the formation of the corresponding ruthenium(IV) closo complex 3,3-(Ph2P(CH2)4PPh2)-3-H-3-Cl-9-Bu-closo-3,1,2-RuC2B9H10 (II) characterized by 2D NMR spectroscopy. On heating compound II can react with carbon tetrachloride to form the 17-electron complex 3,3-(Ph2P(CH2)4PPh2)-3-Cl-9-Bu-closo-3,1,2-RuC2B9H10 (III). The structure of complex III is solved by X-ray diffraction (XRD) (CIF file CCDC no. 2180761). The electrochemical studies show that complex III undergoes the reversible transition Ru(II) → Ru(III) similarly to the earlier studied ruthenacarboranes.

Keywords

ruthenacarboranes, XRD, synthesis, cyclic voltammetry

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