Introduction of Niobium in the Chemistry of Octahedral Chalcogenide Clusters: Synthesis and Detailed Study of Compounds Based on Condensed and Discrete {Re5NbQ8} (Q = S or Se) Cores

Introduction of Niobium in the Chemistry of Octahedral Chalcogenide Clusters: Synthesis and Detailed Study of Compounds Based on Condensed and Discrete {Re5NbQ8} (Q = S or Se) Cores Full article

Journal

Inorganic Chemistry
ISSN: 0020-1669 , E-ISSN: 1520-510X

Output data

Year: 2024, Volume: 63, Number: 34, Pages: 15863–15874 Pages count : DOI: 10.1021/acs.inorgchem.4c02031

Authors

Gaifulina V.K. ¹ , Gaifulin Y.M. ¹ , Ryzhikov M.R. ¹ , Ulantikov A.A. ¹ , Yanshole V.V. ² , Naumov N.G. ¹

Affiliations

1	Nikolaev Institute of Inorganic Chemistry SB RAS
2	International Tomography Center SB RAS

It is known that niobium practically does not form cluster chalcogenide compounds of the {M6(μ3-Q8)} type, which are widespread in the chemistry of group 6 and 7 metals. This work reports the preparation of a series of polymeric and discrete niobium-containing heterometallic clusters based on the {Re5Nb(μ3-S8)} and {Re5Nb(μ3-Se8)} cores. The compounds were prepared by the high-temperature reaction between rhenium and niobium dichalcogenides in a KCN melt. The 1D polymers K5[Re5NbQ8(CN)5] (Q = S or Se), which were formed as a result of the reaction, crystallize in the structural type of K6[Mo6Se8(CN)5], similar to the previously reported heterometallic clusters K6[Re6–xMoxQ8(CN)5] (x = 2–3). The polymers were solubilized to form discrete anionic clusters [Re5NbQ8(CN)6]4–. The structure and properties of the new clusters were investigated using a combination of X-ray diffraction analysis, UV/vis spectroscopy, high-resolution electrospray mass spectrometry, cyclic voltammetry, and DFT calculations. Among other features, the compounds showed high electrochemical activity, being able to form three redox states in solution with reversible transitions. It was found that redox potentials of the isoelectronic octahedral clusters demonstrate a strong cathodic shift in the sequence [Re5OsSe8(CN)6]3– > [Re6Se8(CN)6]4– > [Re5MoSe8(CN)6]5– > [Re5NbSe8(CN)6]6–, illustrating the effect of systematic changes in the composition of octahedral cluster cores on their properties.

Gaifulina V.K. , Gaifulin Y.M. , Ryzhikov M.R. , Ulantikov A.A. , Yanshole V.V. , Naumov N.G.
Introduction of Niobium in the Chemistry of Octahedral Chalcogenide Clusters: Synthesis and Detailed Study of Compounds Based on Condensed and Discrete {Re5NbQ8} (Q = S or Se) Cores
Inorganic Chemistry. 2024. V.63. N34. P.15863–15874. DOI: 10.1021/acs.inorgchem.4c02031 WOS Scopus РИНЦ OpenAlex

Published print:

Aug 9, 2024

Web of science:	WOS:001289113900001
Scopus:	2-s2.0-85200903417
Elibrary:	73647503
OpenAlex:	W4401451588

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