2-(4-Chloro-benzo-yl)-3,6-dimethoxy-naphthalene

Area of Science:

• Organic Chemistry
• Crystallography
• Molecular Structure

Background:

• Understanding the three-dimensional arrangement of atoms in organic molecules is crucial for predicting their properties and reactivity.
• Crystal structure analysis provides precise details about molecular geometry, conformation, and intermolecular interactions in the solid state.

Purpose of the Study:

• To elucidate the detailed crystal structure of the title compound, C(19)H(15)ClO(3).
• To investigate the spatial arrangement and torsion angles between the aromatic ring systems.
• To identify and characterize any significant intermolecular interactions present in the crystal lattice.

Main Methods:

• Single-crystal X-ray diffraction was employed to determine the molecular structure.
• Analysis of bond lengths, bond angles, and torsion angles provided geometric information.
• Identification of hydrogen bonds and other non-covalent interactions was performed.

Main Results:

• The inter-planar angle between the naphthalene and benzene ring systems was determined to be 62.67(6)°.
• The carbonyl group exhibited significant torsion angles relative to both ring systems (-44.9(2)° and -26.7(2)°).
• Intermolecular hydrogen bonds were observed between methoxy groups, leading to the formation of chains along the ac diagonal.

Conclusions:

• The crystal structure of C(19)H(15)ClO(3) is characterized by a substantial dihedral angle between its fused and single aromatic rings.
• The observed torsion angles indicate a non-planar conformation around the carbonyl linker.
• The formation of hydrogen-bonded chains highlights specific intermolecular forces dictating the packing in the solid state.