In addition to these principal oxides of vanadium, various other distinct phases exist:
Phases with the general formula VnO2n+1 exist between V2O5 and VO2. Examples of these phases include V3O7, V4O9 and V6O13.[1]
Phases with the general formula VnO2n−1 exist between VO2 and V2O3.[1] Called Magnéli phases for Arne Magnéli,[2] they are examples of crystallographic shear compounds based on the rutilestructure.[1] Examples of Magnéli phases include V4O7, V5O9, V6O11, V7O13 and V8O15.