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Chromium and tungsten complexes with a paramagnetic gallaimidazole ligand

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Abstract

The reaction of digallane [(dpp-bian)Ga—Ga(dpp-bian)] (1) (dpp-bian is 1,2-bis[(2,6-di-isopropylphenyl)imino]acenaphthene dianion) with chromium or tungsten hexacarbonyl affords the complexes [(dpp-bian)Ga—Cr(CO)5] (2) and [(dpp-bian)Ga—W(CO)5] (3), respectively, containing the neutral radical [(dpp-bian)Ga:]. In both cases, temperature-dependent solvation of the gallium center was observed in a tetrahydrofuran solution. The recrystallization of compound 2 from pyridine gave the new complex [(dpp-bian)(Py)Ga—Cr(CO)5] (4). New compounds 2–4 were characterized by EPR and IR spectroscopy and elemental analysis. The molecular structures of complexes 2–4 were established by single-crystal X-ray diffraction.

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Authors and Affiliations

  1. G. A. Razuvaev Institute of Organometallic Chemistry, Russian Academy of Sciences, 49 ul. Tropinina, 603137, Nizhny Novgorod, Russian Federation

    V. G. Sokolov, A. A. Skatova, A. V. Piskunov, E. V. Baranov & I. L. Fedushkin

  2. College of Chemistry and Materials Science, Northwest University, Xi’an, Shaanxi, 710127, People’s Republic of China

    Y. Zhao & X.-J. Yang

Authors
  1. V. G. Sokolov
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  2. A. A. Skatova
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  3. A. V. Piskunov
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  4. E. V. Baranov
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  5. I. L. Fedushkin
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  6. Y. Zhao
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  7. X.-J. Yang
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Correspondence to A. A. Skatova.

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Dedicated to Academician of the Russian Academy of Sciences A. M. Muzafarov on the occasion of his 70th birthday.

Published in Russian in Izvestiya Akademii Nauk. Seriya Khimicheskaya, No. 8, pp. 1537–1543, August, 2020.

The study was performed within the framework of the State assignment using equipment of the Joint Analytical Center of the G. A. Razuvaev Institute of Organometallic Chemistry of the Russian Academy of Sciences and was financially supported by the Russian Foundation for Basic Research (Project No 20-53-53012 GFEN_a) and within the Federal Target Program “Research and Development in Priority Fields of the Science and Technology Complex of Russia for 2014-2020” (unique project identifier RFMEFI62120X0040).

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Sokolov, V.G., Skatova, A.A., Piskunov, A.V. et al. Chromium and tungsten complexes with a paramagnetic gallaimidazole ligand. Russ Chem Bull 69, 1537–1543 (2020). https://doi.org/10.1007/s11172-020-2933-1

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  • DOI: https://doi.org/10.1007/s11172-020-2933-1

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