Schematic Representation (IMAGE) Samara University Caption This is the schematic representation of the obtained vinylacetylene-mediated proliferation of helicina in [5] - helicenes and [6] - helicenes starting with [4] - helicenes (benzo [C] phenanthrene) Credit Samara University Usage Restrictions None License Licensed content 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.