Chalcogen‐Bonding Interactions in Telluroether Heterocycles [Te(CH2)m]n (n=1-4; m=3-7)
Rodewald, M., Rautiainen, J. M., Niksch, T., Görls, H., Oilunkaniemi, R., Weigand, W., & Laitinen, R. S. (2020). Chalcogen‐Bonding Interactions in Telluroether Heterocycles [Te(CH2)m]n (n=1-4; m=3-7). Chemistry : A European Journal, 26(61), 13806-13818. https://doi.org/10.1002/chem.202002510
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Chemistry : A European JournalAuthors
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2020Copyright
© 2020 The Authors. Published by Wiley-VCH GmbH.
The Te…Te secondary bonding interactions (SBI) in solid heterocyclic telluroethers were explored by preparing and structurally characterizing a series of [Te(CH2)m]n (n = 1‐4; m = 3‐7) species. The SBIs in 1,7‐Te2(CH2)10, 1,8‐Te2(CH2)12, 1,5,9‐Te3(CH2)9, 1,8,15‐Te3(CH2)18, 1,7,13,19‐Te4(CH2)20, 1,8,15,22‐Te4(CH2)24, and 1,9,17,25‐Te4(CH2)28 led to the tubular packing of the molecules, as has been observed previously for related thio‐ and selenoether rings. The nature of the intermolecular interactions was explored by solid‐state PBE0‐D3/pob‐TZVP calculations involving periodic boundary conditions. The packing of molecules in 1,7,13,19‐Te4(CH2)20, 1,8,15,22‐Te4(CH2)24, and 1,9,17,25‐Te4(CH2)28 form infinite shafts. The electron densities at bond critical points indicate a narrow range of Te…Te bond orders of 0.12‐0.14. The formation of the shafts can be rationalized by frontier orbital overlap and charge‐transfer.
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We are grateful to Finnish CSC-IT Center for Science Ltd, The Finnish Grid and Cloud Infrastructure (urn:nbn:fi:researchinfras-2016072533), and Prof. H. M. Tuononen (University of Jyväskylä) for provision of computational resources. We are thankful to Dr. P. Bellstedt, Dipl-Phys. F. Pielenz, B. Rambach (NMR Platform of the FSU Jena), Dr. N. Ueberschaar, M. Heineck, S. Schönau (MS Platform FSU Jena) as well as Dipl.-Ing. B. Fähndrich (surface area measurements). ...License
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