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3-[(5-Methyl-furan-2-yl)methyl-ene]-1,5-dioxaspiro-[5.5]undecane-2,4-dione.

ABSTRACT: There are two crystallographically independent mol-ecules in the asymmetric unit of the title compound, C(15)H(16)O(5). In each, the 1,3-dioxane ring is in an envelope conformation with the C atom common to the cyclo-hexane ring forming the flap. The dihedral angles between the five essentially planar [maximum deviations from the least-squares planes of 0.049?(3) and 0.042?(3)?Å] atoms of the 1,3-dioxane ring and the furan ring in the two mol-ecules are 7.15?(1) and 6.80?(1)°. The crystal structure is stabilized by weak inter-molecular C-H?O hydrogen bonds.

SUBMITTER: Zeng WL 

PROVIDER: S-EPMC2977103 | biostudies-literature | 2009 Jul

REPOSITORIES: biostudies-literature

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3-[(5-Methyl-furan-2-yl)methyl-ene]-1,5-dioxaspiro-[5.5]undecane-2,4-dione.

Zeng Wu-Lan WL   Zhang Hua-Xiang HX   Jian Fang-Fang FF  

Acta crystallographica. Section E, Structure reports online 20090729 Pt 8

There are two crystallographically independent mol-ecules in the asymmetric unit of the title compound, C(15)H(16)O(5). In each, the 1,3-dioxane ring is in an envelope conformation with the C atom common to the cyclo-hexane ring forming the flap. The dihedral angles between the five essentially planar [maximum deviations from the least-squares planes of 0.049 (3) and 0.042 (3) Å] atoms of the 1,3-dioxane ring and the furan ring in the two mol-ecules are 7.15 (1) and 6.80 (1)°. The crystal struct  ...[more]

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