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5,11-Dimethyl-6,12-dimeth-oxy-indolo[3,2-b]carbazole
Norma Wrobel1, Bernhard Witulski, Dieter Schollmeyer
1University Mainz, Duesbergweg 10-14, 55099 Mainz, Germany.
This study details the synthesis and crystal structure of a novel indolocarbazole derivative. The research highlights the compound
Area of Science:
- Organic Chemistry
- Crystallography
- Materials Science
Background:
- Indolocarbazole derivatives are known for their unique photophysical and electronic properties.
- Understanding the structure-property relationships is crucial for designing new functional materials.
Purpose of the Study:
- To synthesize a novel C(22)H(20)N(2)O(2) compound.
- To elucidate the crystal structure of the synthesized indolocarbazole derivative.
- To analyze the molecular geometry and bonding characteristics.
Main Methods:
- Synthesis via a twofold Cadogan cyclization reaction.
- Double N-methylation for functionalization.
- Single-crystal X-ray diffraction for structural determination.
Main Results:
- The compound crystallizes in a zigzag arrangement of centrosymmetric molecules.
- The indolocarbazole core exhibits near-planarity (max deviation = 0.028 Å).
- Methoxy groups are oriented orthogonally to the core plane (torsion angle = -88.2°).
- Distinct C-N bond lengths and significantly longer C-C bonds in the pyrrole subunit compared to benzene rings were observed.
Conclusions:
- The study successfully synthesized and characterized a new indolocarbazole derivative.
- The crystal structure reveals specific molecular arrangements and geometric features.
- Bond length analysis provides insights into the electronic distribution within the molecule.
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