biostudies-literatureUnknown67(Pt 4)Qiao ZIn the title compound, C(21)H(16)O(4), the dihedral angle between the phenyl ring and the 2H-chromene ring system is 59.8 (2)°. The crystal packing is stabilized by weak π-π stacking inter-actions [centroid-centroid distances = 3.667 (2) Å] and inter-molecular C-H⋯O hydrogen-bonding inter-actions.Acta crystallographica. Section E, Structure reports onlineo855https://www.ebi.ac.uk/biostudies/studies/S-EPMC3099813biostudies-literature10-Phenyl-6b,7,8,9,9a,10-hexa-hydro-6H-cyclo-penta-[4,5]pyrano[3,2-c]chromen-6,9-dione.PMC3099813Liu LWang DQiao Zfalse10-Phenyl-6b,7,8,9,9a,10-hexa-hydro-6H-cyclo-penta-[4,5]pyrano[3,2-c]chromen-6,9-dione.In the title compound, C(21)H(16)O(4), the dihedral angle between the phenyl ring and the 2H-chromene ring system is 59.8 (2)°. The crystal packing is stabilized by weak π-π stacking inter-actions [centroid-centroid distances = 3.667 (2) Å] and inter-molecular C-H⋯O hydrogen-bonding inter-actions.2011-01-01T00:00:00Z2011 Apr2025-04-04T23:27:21.899Z2019-03-26T23:59:22ZS-EPMC30998132175413610.1107/S1600536811006192