Dear Jmol users, I would like to inform you about a new website I have recently developed in collaboration with Prof. David Avnir, the Institute of Chemistry, at the Hebrew University: "CoSyM - Continuous symmetry measures": http://telem.openu.ac.il/symmetry/csm. The website provides tools for calculating continuous symmetry measures online for any molecule and uses Jmol for three-dimensional visualization. Answers to questions like: * How far is a given molecule from having rotational symmetry? * By how much is one molecule more chiral than the other? * How much of perfect tetrahedricity is there in a distorted tetrahedron? as well as many other related questions can be answered by these tools. A number, on a scale from zero to 100, describes the distance of a given structure from perfect symmetry; or how much chirality it contains; or to what extent it resembles a polyhedron. The approach to all of these questions is based on the same general principle. That general principle is translated into a computational method for measuring the degree of symmetry point groups, from which several additional specific important measures are derived: * Measuring the degree of the basic symmetry elements * Measuring the degree of polyhedral shape content * Measuring the degree of chirality This website can be used by both researchers, teachers and students, and is part of an undergraduate course for chemistry students at the Open University of Israel. I would be very grateful for any feedback, suggestions or comments regarding the website. Sincerely, Inbal
__________________________________________ Dr. Inbal Tuvi-Arad Department of Natural Sciences The Open University of Israel 108 Ravutski St., POB 808, Raanana, 43107, Israel Tel: 972-9-778-1773 Fax: 972-9-778-0661 Email: [EMAIL PROTECTED] __________________________________________ ------------------------------------------------------------------------- This SF.net email is sponsored by: Microsoft Defy all challenges. Microsoft(R) Visual Studio 2005. http://clk.atdmt.com/MRT/go/vse0120000070mrt/direct/01/ _______________________________________________ Jmol-users mailing list [email protected] https://lists.sourceforge.net/lists/listinfo/jmol-users
