Abstract
Specific features of reactions of complex 5,6,10-{Cl(Ph3P)2Ru}-[5,6,10-(μ-H)3-10-H-exo-nido-7,8-C2B9H8] (1) with 1,2-bis(diphenylphosphino)benzene (dppbz) and bis(diphenylphosphino)methane (dppm) in acetonitrile in the presence of amines were studied. Novel closo-ruthenacarborane complexes containing the metal in a formal oxidation state of +2 were isolated. It was established that the reaction of 1 with dppbz affords a complex containing a coordinated acetonitrile molecule, whereas the reaction with dppm results in a tris(phosphine) complex with strongly sterically shielded ruthenium center. Reactions of the newly obtained compounds with carbon tetrachloride or hydrogen chloride give corresponding 17-electron complexes containing the metal atom in a formal oxidation state of +3. The reversibility of the RuII → RuIII redox transition in the compounds synthesized was investigated by cyclic voltammetry and the influence of the ligand environment on the values of the corresponding redox potentials was assessed.
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Dedicated to Academician of the Russian Academy of Sciences I. P. Beletskaya on the occasion of her anniversary.
This work was financially supported the Russian Federation Presidential Grant to young scientists–Doctors of Science (Project No. MD-1474.2022.1.3).
No human or animal subjects were used in this research.
The authors declare no competing interests.
Published in Russian in Izvestiya Akademii Nauk. Seriya Khimicheskaya, Vol. 72, No. 4, pp. 912–924, April, 2023.
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Kaltenberg, A.A., Zimina, A.M., Bashilova, A.D. et al. Reactions of 5,6,10-{Cl(Ph3P)2Ru}-[5,6,10-(μ-H)3-10-H-exo-nido-7,8-C2B9H8] with bis(diphenylphosphino)methane and 1,2-bis(diphenylphosphino)benzene: specific features. Russ Chem Bull 72, 912–924 (2023). https://doi.org/10.1007/s11172-023-3854-9
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DOI: https://doi.org/10.1007/s11172-023-3854-9