1,3-Bis(propan-2-yl)naphthalene

Area of Science:

• Crystallography
• Organic Chemistry
• Supramolecular Chemistry

Background:

• Naphthalene derivatives are important in materials science and medicinal chemistry.
• Understanding molecular packing and intermolecular interactions is crucial for predicting material properties.

Purpose of the Study:

• To elucidate the crystal structure of a specific C(16)H(20) compound.
• To investigate the influence of isopropyl group orientation on molecular packing.
• To analyze the role of C-H⋯π interactions in stabilizing the crystal lattice.

Main Methods:

• Single-crystal X-ray diffraction was employed to determine the molecular and crystal structure.
• Analysis of atomic displacements from the naphthalene mean plane.
• Identification and characterization of intermolecular C-H⋯π contacts.

Main Results:

• The crystal structure reveals asymmetric displacements of methyl-C atoms in one isopropyl group, unlike the other.
• Molecules are organized into sheets in the ab plane via three C-H⋯π contacts.
• One isopropyl group's C-H⋯π interaction is enhanced by a concurrent interaction with the aromatic ring.

Conclusions:

• The observed asymmetry in isopropyl group orientations is attributed to synergistic C-H⋯π interactions.
• These findings provide insights into the structure-property relationships of naphthalene derivatives.
• The study highlights the importance of weak interactions in directing crystal packing.