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Unusual Formation of the Paramagnetic Complex (η4-C4Me4)CoI2(PhTeI) and Specific Features of Its Electronic, Molecular, and Crystal Structures

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Abstract

The 18-electron (η4-C4Me4)Co(CO)2TeI2Ph compound noticeably decomposes upon prolonged storage and also unusually transforms into the 17-electron (η4-C4Me4)CoI2(PhTeI) complex (I). The X-ray diffraction study of the molecular and crystal structures of complex I (CIF file CCDC no. 1991837) reveals interesting analogies with the molecular structures of the known metal complexes containing organotellurium halide ligands and with the crystal packing of the related one-component crystals of (η4-C4Me4)Co(СО)2TeI2Ph and (η4-C4Me4)Co(СО)2I and two-component crystals of (η4-C4Me4)Co(СО)2I–1,4-C6H4I2. An analysis of the crystal packing of molecules of complex I elucidates a new supramolecular synthone I···(η4-C4Me4) determining the structural motifs of self-assembly in complex I and related compounds (η4-C4Me4)Co(CO)2I, (η4-C4Me4)Co(CO)2I···1,4-C6H4I2, and (η4-C4Me4)Co(CO)2TeI2Ph. The EPR study of compound I shows that cobalt exists in the low-spin state with the total spin S = 1/2.

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ACKNOWLEDGMENTS

The XRD and EPR studies were carried out using the equipment of the Center for Collective Use of Physical Methods of Investigation at the Kurnakov Institute of General and Inorganic Chemistry (Russian Academy of Sciences) in terms of state assignment of the Kurnakov Institute of General and Inorganic Chemistry (Russian Academy of Sciences) in the area of basic research.

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Authors and Affiliations

  1. Kurnakov Institute of General and Inorganic Chemistry, Russian Academy of Sciences, 119991, Moscow, Russia

    Yu. V. Torubaev, I. V. Skabitskii, V. V. Minin, E. A. Ugolkova, P. V. Rusina & S. S. Shapovalov

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  1. Yu. V. Torubaev
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  2. I. V. Skabitskii
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  3. V. V. Minin
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  4. E. A. Ugolkova
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  5. P. V. Rusina
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  6. S. S. Shapovalov
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Correspondence to Yu. V. Torubaev.

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In blessed memory of Professor A.A. Pasynskii

Translated by E. Yablonskaya

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Torubaev, Y.V., Skabitskii, I.V., Minin, V.V. et al. Unusual Formation of the Paramagnetic Complex (η4-C4Me4)CoI2(PhTeI) and Specific Features of Its Electronic, Molecular, and Crystal Structures. Russ J Coord Chem 46, 850–856 (2020). https://doi.org/10.1134/S1070328420120088

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  • DOI: https://doi.org/10.1134/S1070328420120088

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