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Updated: Jun 1, 2026
14:11
Synthesis of pH Dependent Pyrazole, Imidazole, and Isoindolone Dipyrrinone Fluorophores using a Claisen-Schmidt Condensation Approach
Published on: June 10, 2021
2,3-Dihydro-1H-pyrrolizin-1-one
Summary
Two nearly identical molecules of C(7)H(7)NO exist in the crystal structure. These molecules form zigzag chains through weak hydrogen bonding, revealing insights into crystal packing.
Area of Science:
- Crystallography
- Solid-state chemistry
Background:
- The asymmetric unit of a crystal structure can contain multiple symmetry-independent molecules.
- Understanding molecular arrangements in crystals is crucial for predicting material properties.
Purpose of the Study:
- To characterize the crystal structure of the title compound, C(7)H(7)NO.
- To analyze the arrangement and interactions of the molecules within the crystal lattice.
Main Methods:
- Single-crystal X-ray diffraction was used to determine the molecular and crystal structure.
- Analysis of intermolecular interactions, including hydrogen bonding, was performed.
Main Results:
- Two nearly identical molecules of C(7)H(7)NO were identified in the asymmetric unit.
- The molecules are nearly planar and adopt a specific orientation relative to each other.
- Intermolecular C-H⋯O hydrogen bonds link the molecules into zigzag chains along the c axis.
Conclusions:
- The crystal structure of C(7)H(7)NO is characterized by the presence of two unique molecules in the asymmetric unit.
- Weak hydrogen bonding plays a significant role in organizing these molecules into extended chain structures.
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