Diethyl 6H,12H-5,11-methano-dibenzo[b,f][1,5]diazo-cine-1,7-dicarboxyl-ate
Summary
The study details the molecular structure of a Tröger's base analogue, revealing a nearly perpendicular arrangement between its benzene rings. This C(2)-symmetric molecule exhibits unique spatial characteristics for potential applications.
Area of Science:
- Organic Chemistry
- Crystallography
- Molecular Structure
Background:
- Tröger's base derivatives are known for their unique three-dimensional structures.
- Exploring structural variations in Tröger's base analogues is crucial for understanding their chemical properties.
- The 1,7-diethyl ester analogue presents an interesting case for structural investigation.
Purpose of the Study:
- To elucidate the precise molecular geometry of the 1,7-diethyl ester analogue of Tröger's base.
- To determine the dihedral angle between the two benzene rings in the title compound.
- To confirm the symmetry properties of the molecule.
Main Methods:
- Single-crystal X-ray diffraction was employed to analyze the molecular structure.
- The crystal structure was solved and refined to atomic resolution.
- Symmetry elements and key bond angles/torsions were determined.
Main Results:
- The title compound, C(21)H(22)N(2)O(4), was synthesized and characterized.
- The dihedral angle between the two benzene rings was precisely measured at 93.16(3)°.
- The molecule was confirmed to possess C(2) symmetry.
Conclusions:
- The 1,7-diethyl ester analogue of Tröger's base adopts a highly twisted conformation.
- The determined dihedral angle indicates a near-orthogonal arrangement of the aromatic systems.
- The C(2) symmetry simplifies the molecule's structural description and has implications for its reactivity.
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