Crystal structure and Hirshfeld surface analysis of 2-oxo-13-epi-manoyl oxide isolated from Sideritis perfoliata
2018 ◽
Vol 74
(5)
◽
pp. 713-717
Keyword(s):
The title compound, C20H32O2 (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 21 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.
2020 ◽
Vol 76
(5)
◽
pp. 605-610
2021 ◽
Vol 77
(1)
◽
pp. 1-4
2019 ◽
Vol 75
(1)
◽
pp. 81-85
2019 ◽
Vol 75
(2)
◽
pp. 146-149
Keyword(s):
2021 ◽
Vol 77
(7)
◽
pp. 739-743
2018 ◽
Vol 74
(8)
◽
pp. 1063-1066
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2020 ◽
Vol 76
(6)
◽
pp. 811-815
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2020 ◽
Vol 76
(6)
◽
pp. 798-802
2022 ◽
Vol 78
(1)
◽
2019 ◽
Vol 75
(10)
◽
pp. 1411-1417