Crystal structure of 9-methacryloylanthracene

Area of Science:

• Crystallography
• Organic Chemistry
• Materials Science

Background:

• Understanding molecular packing is crucial for predicting material properties.
• Anthracene derivatives are known for their unique photophysical and electronic characteristics.
• The synthesis and structural analysis of novel organic compounds contribute to the broader field of chemical science.

Purpose of the Study:

• To elucidate the crystal structure of 1-(anthracen-9-yl)-2-methyl-prop-2-en-1-one.
• To analyze the molecular geometry and intermolecular interactions within the crystal lattice.
• To investigate the solid-state packing behavior of this anthracene derivative.

Main Methods:

• Single-crystal X-ray diffraction was employed to determine the molecular and crystal structure.
• Analysis of bond lengths, bond angles, and dihedral angles provided detailed geometric information.
• Intermolecular interactions, including hydrogen bonding and pi-pi stacking, were identified and characterized.

Main Results:

• The ketonic carbon atom is slightly displaced from the anthryl ring plane (0.2030 Å).
• A significant dihedral angle (88.30°) exists between the anthryl and methacryloyl moieties.
• Adjacent molecules exhibit parallel-planar association of anthryl units (centroid-centroid distance of 3.6320 Å) facilitated by weak C-H···O hydrogen bonds, forming sheets.

Conclusions:

• The crystal structure reveals a near-perpendicular orientation between the aromatic and unsaturated ketone systems.
• The observed pi-pi stacking and hydrogen bonding interactions dictate the compound's solid-state architecture.
• These findings provide a structural basis for understanding the physical properties and potential applications of this molecule.