P61ya's enumeration theorem has been used to evaluate, by computer, the numbers N of distinct configurations (= positional isomers) produced by univalent (monodentate) substitution at the vertices of convex polyhedra of crystallographic or stereochemical interest. The values of N are tabulated for a large variety of polyhedra of up to V= 120 vertices and for up to V kinds of structureless substituents. The N have been evaluated not only for the maximum point-group symmetry of each polyhedron but also, for V< …
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