Newman projection
The Newman projection , which was introduced by Melvin Spencer Newman , is one of several possibilities to represent the three-dimensional molecule in two-dimensional representation. The molecule to be displayed is viewed along the axis of rotation of a selected single bond .
use
The Newman projection is suitable for representing the conformation of a molecule. In the case of alkanes, a distinction is made between various conformers , including rotamers, based on their torsion angle . It is also suitable for describing reaction mechanisms and predicting the stereochemistry of a reaction product, for example according to Cram's rule .
Other modes of representation
Individual evidence
- ↑ Stereochemistry: Basic Concepts, by Karl-Heinz Hellwich . books.google.de. Retrieved December 19, 2009.
literature
- MS Newman: A notation for the study of certain stereochemical problems , in: J. Chem. Educ. 1955, 32, 344-347 .