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20-Oxa-penta-cyclo-[15.2.1.02,16.03,8.010,15]icosa-2(16),3,5,7,10(15),11,13,18-octaen-9-one.
Dieter Schollmeyer1, Heiner Detert1
1University of Mainz, Department of Chemistry, Duesbergweg 10-14, 55099 Mainz, Germany.
Iucrdata
|June 8, 2026
Summary
The study reveals the saddle-like molecular structure of C19H12O2, with planar o-xylylene fragments and specific carbonyl and ether oxygen positioning. Molecules self-assemble into alternating directional strands.
Area of Science:
- Organic Chemistry
- Crystallography
- Molecular Structure
Background:
- Understanding the three-dimensional arrangement of organic molecules is crucial for predicting their properties and reactivity.
- The specific compound C19H12O2 has not been previously characterized in terms of its solid-state structure.
Purpose of the Study:
- To elucidate the molecular geometry and crystal packing of the title compound, C19H12O2.
- To describe the conformation of the o-xylylene fragments and the relative orientation of functional groups.
Main Methods:
- Single-crystal X-ray diffraction was employed to determine the molecular and crystal structure.
- Analysis of bond lengths, bond angles, and intermolecular interactions was performed.
Main Results:
- The molecules of C19H12O2 adopt a distinct saddle shape.
- The o-xylylene moieties within the molecule are nearly planar.
- The carbonyl group and ether oxygen atom are situated on the same side of the molecular framework.
- Molecules are organized into strands with alternating orientations within the crystal lattice.
Conclusions:
- The determined saddle conformation influences the packing arrangement.
- The observed strand formation suggests potential for anisotropic material properties.
- This structural data provides a foundation for further studies on C19H12O2.
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