| potassium oxotetrafluoroniobate(v) |
| columbium potassium fluoride |
| dipotassium pentafluorooxoniobate |
| pentafluorooxo-niobate(2- dipotassium |
| dipotassium, (oc-6-21)-niobate(2-pentafluorooxo- |
| niobium potassium fluoride |
| potassium fluoniobate(v) (k2nbof2) |
| potassium hydroxyfluoroniobate |
