Entropy-driven Stereoselectivity

CCA! Volume 5

Home

Table of Contents

Keyword Index

Textbook X-ref

About CCA!

Entropy-driven Stereoselectivity

Solutions of the D and L configurations of vanadyl tartrate complexes are mixed. The mixture changes color as a complex that contains one tartrate ligand in the D configuration and another in the L configuration is formed.


View Slide Thumbnails

1.9 MB, 32 seconds

File: MOVIES/MISC/STEREO.MOV

Voiceover
Two solutions of vanadyl tartrate complexes, one with two tartrate ligands in the D configuration and the other with two tartrate ligands in the L configuration, have been prepared. When the solutions are mixed, a complex containing one tartrate ligand in the D configuration and one in the L configuration gradually forms, and the color changes from violet to red. The increase in entropy due to the mixing of the two ligands is one of the driving forces in the reaction.

Design, Demonstration and Text:
	George Gilbert	Denison University, Granville, OH 43023

Voice:
	Margaret Biddle	University of Wisconsin - Madison, Madison, WI 53706

Video:
	Jerrold J. Jacobsen	University of Wisconsin - Madison, Madison, WI 53706