Abstract
New silver complexes [Ag(bipy)(CH3COCHCOR)]x with 2,2′-bipyridine (bipy) and β-diketonate ligands (tfac: R = CF3, x = 2; hfbac: R = C3F7, x = 1) are prepared as part of the search for precursors for the vapor deposition of films and silver nanoparticles. The compounds are characterized by elemental analysis, IR and 1H NMR spectroscopy; their crystal structures are determined by XRD. Both complex are molecular due to the bidentate-cyclic coordination of both ligands. The [Ag(bipy)(hfbac)] molecules are mononuclear due to the steric effect of the extended perfluoroalkyl chain. For L = tfac, a binuclear complex is formed due to the coordination of the methine carbon atom. Thermal properties of the new complexes are studied by TGA and DSC and compared with those of the known hexafluoroacetylacetonate analog [Ag(bipy)(hfac)]2. The temperatures and thermodynamic parameters of melting are determined for all the studied compounds.
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Funding
This work was funded by the Russian Science Foundation (project No. 20-15-00222-P). The authors thank Dr. Karakovskaya for her participation in the primary synthesis and data analysis; Dr. Kurykin (A. N. Nesmeyanov Institute of Organoelement Compounds of the Russian Academy of Sciences) for the Hhfbac β-diketone synthesis; Multi-Access Chemical Service Center of N. N. Vorozhtsov Novosibirsk Institute of Organic Chemistry of the Siberian Branch of the Russian Academy of Sciences for conducting the elemental analysis of the samples; and the Ministry of Science and Higher Education of the Russian Federation (internal resources and the XRD Facility of the Nikolaev Institute of Inorganic Chemistry of the Siberian Branch of the Russian Academy of Sciences) for providing the possibility of recording the primary diffraction, spectral, and calorimetric data.
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Russian Text © The Author(s), 2024, published in Zhurnal Strukturnoi Khimii, 2024, Vol. 65, No. 3, 123772.https://doi.org/10.26902/JSC_id123772
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Vikulova, E.S., Sukhikh, T.S., Barysheva, A.S. et al. Structure and Thermal Properties of Silver Complexes with 2,2′-Bipyridine and Fluorinated β-Diketonate Ligands. J Struct Chem 65, 489–503 (2024). https://doi.org/10.1134/S0022476624030065
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DOI: https://doi.org/10.1134/S0022476624030065