Ruthenium Complexes Based on C2B9-nido-Carborane and Tridentate Phosphorus- and Nitrogen-Containing Ligands

A. A. Kal’tenberg; Кальтенберг А. А.; A. D. Bashilova; Башилова А. Д.; N. V. Somov; Сомов Н. В.; Yu. V. Malysheva; Малышева Ю. Б.; I. D. Grishin; Гришин И. Д.

doi:10.31857/S0044457X23700241

Ruthenium Complexes Based on C2B9-nido-Carborane and Tridentate Phosphorus- and Nitrogen-Containing Ligands

Authors: Kal’tenberg A.A.¹, Bashilova A.D.¹, Somov N.V.¹, Malysheva Y.V.¹, Grishin I.D.¹
Affiliations:
1. Lobachevsky State University of Nizhny Novgorod
Issue: Vol 68, No 9 (2023)
Pages: 1277-1286
Section: КООРДИНАЦИОННЫЕ СОЕДИНЕНИЯ
URL: https://rjonco.com/0044-457X/article/view/666256
DOI: https://doi.org/10.31857/S0044457X23700241
EDN: https://elibrary.ru/WKKOGJ
ID: 666256

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Abstract

Reaction of bis(2-(diphenylphosphino)ethyl)benzylamine (PNP) and bis(2-methylpyridyl)benzylamine (NNN) with known closo-ruthenacarborane [3-H-3-Cl-3,3-(PPh3)2-3,1,2-RuC2B9H11] (1) leads to the formation of new ruthenium carborane complexes 3,3,3-(bis(2-(diphenylphosphino)ethyl)benzylamine)-closo-3,1,2-RuC2B9H11 (2) and 3,3,3-(bis(2-methylpyridyl)benzylamine)-pseudocloso-3,1,2-RuC2B9H11 (3), respectively. The resulting complexes have been studied by NMR and IR spectroscopy and time-of-flight MALDI MS. Geometry optimization of complex 2 obtained for the first time by quantum-chemical modeling reduces to the closo-configuration, while complex 3 is stable both in closo and pseudocloso forms. Using single-crystal X-ray diffraction, it has been found that complex 2 has a closo structure, whereas 3 has a pseudocloso structure. A study of the electrochemical properties showed that complexes 2 and 3 are capable of reversible oxidation.

Keywords

closo-ruthenacarboranes, aminophosphines, aminopyridines, cyclic voltammetry

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