title: On vanadate phosphate and arsenate framework structures based on the NbO-net.
abstract: The recently described framework structure of composition [As(6)V(4+)(12)V(5+)(3) O(51)](-9) is analogous to previously known vanadate phosphate frameworks.
authors.forename: W H
authors.initials: WH
authors.lastname: Baur
authors.forename: M
authors.initials: M
authors.lastname: Schindler