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2-exo,5-endo,8,8,10-Penta-chloro-bornane
Acta Crystallographica. Section E, Structure Reports Online
|January 5, 2011
Summary
This study identifies a specific polychlorinated monoterpene, a Toxaphene congener, revealing its correct 2-exo,5-endo,8,8,10-penta-chloro-bornane structure. X-ray analysis clarified its distinct structure and static disorder, crucial for understanding chlorinated organic compounds.
Area of Science:
- Organic Chemistry
- Environmental Chemistry
- Structural Chemistry
Background:
- Polychlorinated monoterpenes are significant environmental contaminants.
- Toxaphene congeners are a complex group of organochlorine compounds.
- Camphene derivatives are important in organic synthesis and as potential pollutants.
Purpose of the Study:
- To elucidate the precise structure of a specific penta-chlorinated camphene derivative.
- To correct a previous misidentification of a Toxaphene congener.
- To investigate the structural characteristics, including static disorder, of this compound.
Main Methods:
- X-ray structural analysis was employed to determine the molecular structure.
- Ionic chlorination was used in the synthesis of the compound.
- Crystallographic data was analyzed to identify atomic positions and disorder.
Main Results:
- The title compound was confirmed to be 2-exo,5-endo,8,8,10-penta-chloro-bornane, not 2-exo,5-endo,9,9,10-penta-chloro-bornane.
- The compound exhibits significant static disorder, with two major partitions (0.575:0.425 occupancy ratio).
- Repulsive close contacts between chlorine atoms are suggested as the cause of the observed disorder.
Conclusions:
- The accurate structural determination of this Toxaphene congener is critical for environmental and toxicological assessments.
- Understanding the static disorder provides insights into the molecular packing and stability of polychlorinated bornanes.
- This research refines the understanding of ionic chlorination pathways and their products.
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