Abstract
From the geometrical point of view, all observed conformations of the 3,6-di-tert-butyl-o-benzoquinone fragments are determined by the inequivalent positions of the Me groups of the tBu substitutes relative to the carbonyl oxygen atoms. The geometrical inequivalence is believed to cause the energetic inequivalence of the Me groups. The relevant quantum mechanical computations revealed intramolecular contacts of the C=O···H-(tBu)-type (2.37–3.83 kcal/mole) that can be interpreted to be hydrogen bonding interactions.
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Acknowledgments
This work was supported by NSh 4182.2008.3; NSh 3826.2010.3, Russian Foundation for Basic Research (Project Nos. 09-03-97034-r_povolzh’e_a, 07-03-00711, 07-03-00819, 08-03-12090-ofi, 08-03-97055-r_povolzh’e_a).
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Fukin, G.K., Cherkasov, A.V., Shurygina, M.P. et al. Geometrical and energetical aspects of structure of 3,6-di-tert-butyl-o-benzoquinones. Struct Chem 21, 607–611 (2010). https://doi.org/10.1007/s11224-010-9590-1
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DOI: https://doi.org/10.1007/s11224-010-9590-1