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Updated: Jun 1, 2026

Self-assembling Morphologies Obtained from Helical Polycarbodiimide Copolymers and Their Triazole Derivatives
Published on: February 7, 2017
tert-Butyl imidazole-1-carboxyl-ate
Tobias Kerscher1, Tanja Prommnitz, Peter Klüfers
1Ludwig-Maximilians Universität, Department Chemie und Biochemie, Butenandtstrasse 5-13 (Haus D), 81377 München, Germany.
Molecular structures form chains via weak C-H⋯O bonds and exhibit π-π stacking between pyrazole rings. This crystal structure analysis reveals key intermolecular interactions in the compound C(8)H(12)N(2)O(2).
Area of Science:
- Crystallography
- Supramolecular Chemistry
- Organic Chemistry
Background:
- Understanding intermolecular forces is crucial for predicting and controlling material properties.
- Pyrazole derivatives are important scaffolds in medicinal chemistry and materials science.
Purpose of the Study:
- To elucidate the crystal structure and intermolecular interactions of the title compound C(8)H(12)N(2)O(2).
- To characterize the network of interactions, including hydrogen bonding and π-π stacking.
Main Methods:
- Single-crystal X-ray diffraction was used to determine the molecular and crystal structure.
- Graph-set analysis was employed to systematically describe the hydrogen bond motifs.
- Intermolecular distances and geometries were analyzed to identify significant interactions.
Main Results:
- The crystal structure reveals molecules linked by C-H⋯O hydrogen bonds, forming chains along the [100] direction.
- Graph-set analysis assigned the unitary descriptor C(5) to these molecular chains.
- Significant π-π stacking interactions were observed between pyrazole rings with a centroid distance of 3.878 Å.
Conclusions:
- The title compound exhibits a well-defined crystal structure governed by a combination of C-H⋯O hydrogen bonds and π-π stacking.
- These intermolecular interactions dictate the formation of one-dimensional chains and influence the overall packing in the solid state.
- The findings contribute to the understanding of structure-property relationships in pyrazole-based organic compounds.
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