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oai:ebyu-rdlopen.rawdatalibrary.net:ebyu/140282026-10-18T21:14:21Zopenairedrivercom_ebyu_10000col_ebyu_10001

Crystal structure and Hirshfeld surface analysis of 2-oxo-13-epi-manoyl oxide isolated from Sideritis perfoliataÇelik, ÍsmailAtioǧlu, ZelihaAksit, HuseyinDemirtas, IbrahimErenler, RamazanAkkurt, Mehmetcrystal structurecyclohexane ringshelical supramolecular chainsHirshfeld surface analysistetrahydropyran ringsThe title compound, C20 H32 O2 (systematic name: 3-ethenyl-3,4a,7,7,10a-pentamethyldodecahydro-9H-benzo[f]chromen-9-one), was isolated from Sideritis perfoliata. In the crystal, molecules pack in helical supramolecular chains along the 2 1 screw axis running parallel to the a axis, bound by C - H...O hydrogen bonds. These chains are efficiently interlocked in the other two unit-cell directions via van der Waals interactions. Hirshfeld surface analysis shows that van der Waals interactions constitute the major contribution to the intermolecular interactions, with H...H contacts accounting for 86.0% of the surface. © Çelik et al. 2018.International Union of Crystallography2018Articlehttps://rdlopen.rawdatalibrary.net/r/ebyu/14028https://doi.org/10.1107/s20569890180058072056-9890enActa Crystallographica Section E: Crystallographic Communicationsinfo:eu-repo/semantics/openAccessinfo:eu-repo/semantics/articlehttps://ebyu-rdlopen.rawdatalibrary.net/tr/items/ebyu/14028