pentadecahedral

— The stabilizing influence of the isoamyl chain on a Pd cavity, due to the correspondence between the shape and size of the chain and the configuration of the pentadecahedral water shell, is geometrically manifested in the presence of a large number of C…O distances of order 3.3-4.0 Å (Table III).[…]The pentadecahedral and decahedral cavities have the shapes of prolate spheroids with maximum diameters of 6.1-7.0 Å (Ref. 4) and minimum diameters of 3.7-4.3 Å (calculated by the present authors).