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A Two-Step Protocol for Umpolung Functionalization of Ketones Via Enolonium Species
Published on: August 16, 2018
2-Carb-oxy-1-phenyl-ethanaminium perchlorate
Xiu-Zhi Li1, Hui Li, Zhi-Rong Qu
1Ordered Matter Science Research Center, College of Chemistry and Chemical Engineering, Southeast University, Nanjing 210096, People's Republic of China.
The crystal structure of a novel organic compound reveals a unique six-membered ring formed by an intramolecular hydrogen bond. This structure facilitates intermolecular interactions, creating an extensive molecular network in the solid state.
Area of Science:
- Crystal Engineering
- Supramolecular Chemistry
- Organic Solid-State Chemistry
Background:
- Understanding molecular interactions is crucial for designing materials with specific properties.
- Intramolecular and intermolecular forces dictate crystal packing and network formation.
- Hydrogen bonding plays a significant role in stabilizing molecular architectures.
Purpose of the Study:
- To elucidate the crystal structure of the title compound, C(9)H(12)NO(2) (+)·ClO(4) (-).
- To investigate the role of intra-molecular and inter-molecular interactions in network formation.
- To characterize the specific types of hydrogen bonds and other interactions present.
Main Methods:
- Single-crystal X-ray diffraction analysis was employed to determine the three-dimensional molecular structure.
- Analysis of bond lengths, angles, and non-covalent interactions was performed.
- Identification of hydrogen bonding (N-H⋯O, O-H⋯O, C-H⋯O) and C-H⋯π interactions.
Main Results:
- An intramolecular N-H⋯O interaction was identified, leading to the formation of a six-membered ring with a twisted chair conformation.
- Intermolecular O-H⋯O, N-H⋯O, and C-H⋯O interactions were observed, connecting molecules into a cohesive network.
- A weak C-H⋯π interaction was also detected, contributing to the overall crystal packing.
Conclusions:
- The crystal structure is stabilized by a combination of intramolecular and intermolecular hydrogen bonding.
- The identified interactions dictate the formation of a complex three-dimensional molecular network.
- This study provides insights into the supramolecular assembly of organic salts.
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