Abstract
A series of open-framework germanates, alumino- and silico-germanates were synthesized (denoted as SU-n). Most of them were built from a few types of inorganic clusters containing a well-defined number of polyhedra: Ge(3)O(9) (4=1), Ge(4)O(16) (D4R) and larger clusters including 7, 9 and 10 Ge atoms (named Ge(7), Ge(9), Ge(10) clusters, respectively). Different arrangements and combinations of these clusters resulted in different open-framework structures including several novel zeolite frameworks. Here, we examine the different underlying nets and tilings observed in germanate-based compounds synthesized by our group and others.