A structural consideration of kanemite, octosilicate, magadiite and kenyaite

By comparing data from 29 Si, 1 H and 23 Na NMR studies, new model structures have been proposed for the layered sodium polysilicate hydrates, kanemite, octosilicate, magadiite and kenyaite. These are based on the known structures of the anhydrous silicate, KHSi 2 O 5 , and piperazine silicate (EU19), rather than the known structure of the layered sodium polysilicate hydrate, makatite, which previous authors have used as a basis for their models.