Abstract
A layered compound with regularly alternating monolayers of MoS2 and N,N,N',N'-tetramethylguanidine (TMG) is synthesized by the reaction of monolayer dispersions of molybdenum disulfide containing anionic particles (MoS2)x– with protonated TMG molecules. It is found by a combination of methods (X‑ray diffraction analysis adapted for turbostrate-disordered systems, high-resolution transmission electron microscopy, FT-IR spectroscopy, and quantum-chemical calculations by the density functional theory) that the structure of MoS2 layers with octahedrally coordinated molybdenum atoms forming chains of Mo–Mo bonds is stabilized in the compound. Noncovalent binding interactions occur between the MoS2 monolayers and TMG molecules including CH…S, NH…S, and N…S contacts with the predominant contribution of contacts of the first type to the binding energy (СIF file CCDC no. 1 990439).
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ACKNOWLEDGMENTS
The structural studies were supported by the Ministry of Science and Higher Education of the Russian Federation using the scientific equipment of the Center of Investigation of Structure of Molecules of the Nesmeyanov Institute of Organoelement Compounds (Russian Academy of Sciences).
Funding
This work was supported by the Russian Science Foundation, project no. 20-13-00241.
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The authors congratulate Academician I.L. Eremenko on his 70th jubilee
Translated by E. Yablonskaya
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Ushakov, I.E., Goloveshkin, A.S., Lenenko, N.D. et al. Structure and Noncovalent Interactions of Molybdenum Disulfide Monolayers in the Layered Organo-inorganic Compound with Tetramethylguanidine. Russ J Coord Chem 46, 779–785 (2020). https://doi.org/10.1134/S1070328420090067
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DOI: https://doi.org/10.1134/S1070328420090067