"The two crystalline forms of aspirin are so closely related," explain Andrew D. Bond, Roland Boese and Gautam R. Desiraju in Angewandte Chemie, "that they form structures containing domains of both ...

(a) Aspirin pills. (b) Crystal structure of aspirin representing a regular, spatially periodic arrangement of molecules. (c) The animation illustrates the redistribution of electron density during the ...

This press release is also available in German. When you get a headache, you probably reach for aspirin. What is giving researchers a headache is the question of the crystal structure of aspirin. Is ...