2,9-Di-methyl-phenanthro[2,1-b:6,5-b']di-thio-phene
Tetsuji Moriguchi1, Misa Sasaki1, Noriko Miyoshi2
1Department of Material Science, Faculty of Engineering, Kyushu Institute of Technology, 1-1 Sensui-cho, Tobata-ku Kitakyushu, Fukuoka, Japan.
Iucrdata
|August 7, 2026
Summary
Researchers synthesized a novel sulfur-containing compound using photocyclization. The molecule exhibits a puckered structure stabilized by intermolecular interactions, impacting its extended solid-state arrangement.
Area of Science:
- Organic Chemistry
- Materials Science
- Photochemistry
Background:
- Thiophene derivatives are versatile building blocks in organic synthesis.
- Photocyclization reactions offer efficient routes to complex molecular architectures.
- Understanding intermolecular forces is crucial for predicting solid-state properties.
Purpose of the Study:
- To synthesize a novel C20H14S2 compound.
- To investigate the structural characteristics of the synthesized molecule.
- To explore the role of intermolecular interactions in its solid-state structure.
Main Methods:
- Oxidative photocyclization of a dimethyl-substituted thiophene precursor.
- Single-crystal X-ray diffraction to determine molecular and crystal structure.
- Analysis of non-covalent interactions, including C-H⋯π interactions.
Main Results:
- Successful synthesis of the title compound C20H14S2.
- The molecule adopts a puckered conformation attributed to steric hindrance.
- The extended structure is characterized by stacked molecular columns.
- C-H⋯π interactions play a significant role in stabilizing the crystal lattice.
Conclusions:
- The study demonstrates an effective photocyclization strategy for synthesizing complex sulfur-containing molecules.
- Steric effects dictate the molecular conformation, leading to a puckered structure.
- Intermolecular C-H⋯π interactions are key to the consolidation of the extended solid-state structure.
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