The direct relationship between a templating agent and the resulting structure is illustrated in the synthesis of AlP04-1 7,with a proposed erionite framework topology, by
using quinuclidine,neopentylamine, or cyclohexylamine. In each chemical analysis corresponds to two template molecules per large cavity. building experiments indicate
that (1) the three templating agents are similar size, (2)two template molecules essentially fill the large cavity, and 3) there are no further voids in the erionite-type
structure of sufficient volume to contain these templates. Similarly, tetramethylammonium
hydroxide (TMAOH) templates the AlP04-20 sodalite framework topology with a template
stoichiometry near 1 per sodalite cage. The spherical TMAOH molecule, with a 0.62-nm diameter, fits neatly into the sodalite cage.