André S. Dreiding (22 June 1919 in Zürich – 24 December 2013[1][2] in Herrliberg near Zurich) was a Swiss chemist.
After two years as a research assistant at Hoffmann-La Roche, he continued postgraduate studies at the University of Michigan in Ann Arbor under professor Werner Emmanuel Bachmann and was awarded his PhD in 1947.
Unlike the older ball-and-stick models, the atoms were not represented by a ball but rather by the point of intersection of the steel tubes.
This gave the Dreiding Stereomodels a neat look and made the assembly much quicker than earlier skeletal models.
[citation needed] However, especially for spectroscopic structure elucidation using NMR and MS, the availability of "hands-on" accurate molecular models remains very valuable.