4,4'-Di-4-pyridyl-2,2'-dithio-dipyrimidine

Area of Science:

• Crystallography
• Chemical Physics

Background:

• Understanding molecular interactions is crucial for materials science.
• Crystal structure analysis provides insights into intermolecular forces.

Purpose of the Study:

• To elucidate the crystal structure of the molecule C(18)H(12)N(6)S(2).
• To analyze the torsion and dihedral angles governing molecular conformation.
• To investigate intermolecular interactions and their role in crystal packing.

Main Methods:

• Single-crystal X-ray diffraction was employed to determine the molecular and crystal structure.
• Analysis of torsion and dihedral angles provided conformational data.
• Intermolecular interactions, specifically pi-pi stacking, were identified and quantified.

Main Results:

• The C-S-S-C torsion angle was determined to be 96.12(9)°.
• Dihedral angles between pyridyl and pyrimidinyl rings were measured as 16.7(1)° and 1.27(9)°.
• Intermolecular pi-pi interactions with centroid-centroid distances of 3.888(2) Å and 3.572(1) Å were observed, forming chains.

Conclusions:

• The molecule C(18)H(12)N(6)S(2) exhibits specific conformational preferences.
• Intermolecular pi-pi interactions are key in organizing these molecules into extended chains within the crystal lattice.