Fig. 2. Three Molecular Configurations (image) Moscow Institute of Physics and Technology Share Print E-Mail Caption The three molecular configurations -- isotactic, syndiotactic, and atactic -- differ by the mutual orientation of the methyl group (orange) and hydrogen (green). Credit MIPT Press Office Usage Restrictions None Share Print E-Mail Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.