An Unusually Stable Organic Radical (2 of 2) (video) American Association for the Advancement of Science Share Print E-Mail Loading video... Caption This video shows a spacefilling representation of the monoradical (7+) homocatenane crystal structure. From this representation it is possible to get a sense of how tightly bound these two rings are where there is very little free space between each ring. This video relates to a paper that appeared in Jan. 25, 2013, issue of Science, published by AAAS. The paper, by Jonathan C. Barnes at Northwestern University in Evanston, IL, and colleagues was titled, "A Radically Configurable Six-State Compound." Credit [Video courtesy of J. Fraser Stoddart, Jonathan C. Barnes] Usage Restrictions Please cite the owner of the video when publishing. This video may be freely used by reporters as part of news coverage, with proper attribution. Non-reporters must contact Science for permission. 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.