Insertion of Functional Groups into Square‐Planar Units: A New Construction Principle for Open Microporous Framework Structures

Large pores and reactive centers characterize the novel, more open vanadium phosphates. The three-dimensional nets on which they are based differ from those of classical microporous materials such as aluminosilicate zeolites; however, they have interesting topological relationships to some of them (see, for example, the framework of the sodalite type depicted on the right). Based on these relationships, microporous materials can be envisaged that contain arbitrary functional groups.