Limits...
Crystal structure of rac-3,9-bis-(2,6-di-fluoro-phen-yl)-2,4,8,10-tetra-oxa-spiro[5.5]undeca-ne.

Chen L, Li Z, Jin L, Sun X, Wang Z - Acta Crystallogr E Crystallogr Commun (2015)

Bottom Line: The two six-membered O-heterocycles adopt chair conformations through a shared spiro-carbon atom that is located on the crystallographic twofold rotation axis.In this conformation, the two aromatic rings are located at the equatorial positions of the O-heterocycles.The conformation of this doubly substituted tetra-oxa-spiro system is chiral.

View Article: PubMed Central - HTML - PubMed

Affiliation: Advanced Catalysis and Green Manufacturing Collaborative Innovation Center, Changzhou University, Changzhou 213164, Jiangsu, People's Republic of China.

ABSTRACT
The title compound, C19H16F4O4, was prepared by the condensation reaction of 2,6-di-fluoro-benzaldehyde and penta-erythritol. The whole mol-ecule is generated by twofold rotational symmetry. The two six-membered O-heterocycles adopt chair conformations through a shared spiro-carbon atom that is located on the crystallographic twofold rotation axis. In this conformation, the two aromatic rings are located at the equatorial positions of the O-heterocycles. The conformation of this doubly substituted tetra-oxa-spiro system is chiral. In the crystal, mol-ecules are linked by C-H⋯O hydrogen bonds, forming layers parallel to (100). These layers are linked by C-H⋯F hydrogen bonds into a three-dimensional structure.

No MeSH data available.


Related in: MedlinePlus

The crystal structure of enantiomers of the title compound, showing the two opposite enantiomers.
© Copyright Policy - open-access
Related In: Results  -  Collection

License
getmorefigures.php?uid=PMC4384547&req=5

Fap2: The crystal structure of enantiomers of the title compound, showing the two opposite enantiomers.


Crystal structure of rac-3,9-bis-(2,6-di-fluoro-phen-yl)-2,4,8,10-tetra-oxa-spiro[5.5]undeca-ne.

Chen L, Li Z, Jin L, Sun X, Wang Z - Acta Crystallogr E Crystallogr Commun (2015)

The crystal structure of enantiomers of the title compound, showing the two opposite enantiomers.
© Copyright Policy - open-access
Related In: Results  -  Collection

License
Show All Figures
getmorefigures.php?uid=PMC4384547&req=5

Fap2: The crystal structure of enantiomers of the title compound, showing the two opposite enantiomers.
Bottom Line: The two six-membered O-heterocycles adopt chair conformations through a shared spiro-carbon atom that is located on the crystallographic twofold rotation axis.In this conformation, the two aromatic rings are located at the equatorial positions of the O-heterocycles.The conformation of this doubly substituted tetra-oxa-spiro system is chiral.

View Article: PubMed Central - HTML - PubMed

Affiliation: Advanced Catalysis and Green Manufacturing Collaborative Innovation Center, Changzhou University, Changzhou 213164, Jiangsu, People's Republic of China.

ABSTRACT
The title compound, C19H16F4O4, was prepared by the condensation reaction of 2,6-di-fluoro-benzaldehyde and penta-erythritol. The whole mol-ecule is generated by twofold rotational symmetry. The two six-membered O-heterocycles adopt chair conformations through a shared spiro-carbon atom that is located on the crystallographic twofold rotation axis. In this conformation, the two aromatic rings are located at the equatorial positions of the O-heterocycles. The conformation of this doubly substituted tetra-oxa-spiro system is chiral. In the crystal, mol-ecules are linked by C-H⋯O hydrogen bonds, forming layers parallel to (100). These layers are linked by C-H⋯F hydrogen bonds into a three-dimensional structure.

No MeSH data available.


Related in: MedlinePlus