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Acta Crystallographica. Section E, Structure Reports Online
|April 28, 2011
Summary
This study details the crystal structure of a compound containing two independent molecules, revealing keto forms and specific dihedral angles. Hydrogen bonds and C-H interactions form a 3D network in the crystal structure.
Area of Science:
- Crystallography
- Chemical Physics
- Organic Chemistry
Background:
- Crystallographic studies are essential for understanding molecular structure and intermolecular interactions.
- The compound C(11)H(12)N(2)O presents an interesting case for structural analysis due to its independent molecular units.
Purpose of the Study:
- To elucidate the crystal structure of the title compound, C(11)H(12)N(2)O.
- To analyze the molecular geometry, including bond lengths and dihedral angles.
- To investigate the intermolecular interactions and crystal packing.
Main Methods:
- Single-crystal X-ray diffraction was employed to determine the crystal structure.
- Analysis of bond lengths, bond angles, and dihedral angles.
- Identification and analysis of hydrogen bonds (N-H⋯O, C-H⋯O) and C-H⋯π interactions.
Main Results:
- The asymmetric unit contains two independent molecules (A and B) with similar keto-form geometries.
- Specific C=O bond lengths (1.286(2) Å for A, 1.283(2) Å for B) and dihedral angles (43.28(12)° and 46.88(11)°) were determined.
- Disordered ethyl group in molecule B and formation of a 3D network via hydrogen bonds and C-H⋯π interactions were observed.
Conclusions:
- The crystal structure of C(11)H(12)N(2)O is characterized by two independent keto-form molecules.
- Intermolecular hydrogen bonding and C-H⋯π interactions play a crucial role in organizing the crystal lattice into a three-dimensional network.
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