Stereoisomerism, crystal structures, and dynamics of belt-shaped cyclonaphthylenes
Abstract
Stereoisomerism of molecules shapes an indispensable concept in molecular science. Stereoisomerism becomes complicated in cyclic structures such as saccharides but has now been established to form a fundamental knowledge in chemistry. When dynamic conformations are involved in the stereoisomerism of cyclic structures, there emerges a unique type of isomerism. Such perplexing dynamic stereoisomerism is involved in belt-shaped cyclic arrays of aromatic molecules, known recently as carbon nanohoops, but has scarcely been clarified to date. In this paper, a series of nanohoops with multiple panels of naphthalene has been synthesized. Their stereoisomerism, static structures, and dynamic behaviors have been investigated by using mathematical, crystallographic, and spectroscopic methods to reveal the unique structural chemistry present in segmental sp2-carbon networks of carbon nanotubes.
- Publication:
-
Proceedings of the National Academy of Science
- Pub Date:
- July 2016
- DOI:
- 10.1073/pnas.1606530113
- Bibcode:
- 2016PNAS..113.8109S