Dear CCLers, Could anyone be so nice to tell me where to find the structure informations (say, atomic coordinates) for polymers? Maybe there is one "Polymer Data Bank" like Brookhaven Databank somewhere. By the way, specificlly I'm seeking for the experimental structure of polycarbonate, if such a Data Bank doesn't exist, could anyone also tell me where to find the atomic coordinates of it? With my best wishes, Jung-hsin Lin