| # | Species | Formula |
| 2683 | KNO3.2H2O | H4NO5K | |
| 2684 | KNO3.2H2O (Geo) | H4NO5K | |
| 2685 | K(+)(H2O)5.OH (Geo) | H11O6K | |
| 2686 | K(+)(H2O)5.OH | H11O6K | |
| 2687 | K(I)(H2O)6(+) (GUGNUR) | H12O6K | |
| 2688 | K(+)-18-crown-6 (KEGXID) (Geo) | C12H24O6K | |
| 2689 | K(I)O6(+) (AQEPIV) (Geo) | C12H24O6K | |
| 2690 | K(I)O6(+) (AQEPIV) | C12H24O6K | |
| 2691 | K(I)O6N (YAKWOX) (Geo) | C16H28NO6K | |
| 2692 | K(I)O6N (YAKWOX) | C16H28NO6K | |
| 2693 | K(I)O6N2(+) (GAZGIX) (Geo) | C18H36N2O6K | |
| 2694 | K(I)O6N2(+) (GAZGIX) | C18H36N2O6K | |
| 2695 | K(I)O7 (LEGXOK) (Geo) | C20H31O7K | |
| 2696 | K(I)O7 (LEGXOK) | C20H31O7K | |
| 2697 | Nonactin-potassium thiocyanate (NONKCS) (Geo) | C40H64O12K | |
| 2698 | Potassium fluoride (Geo) | FK | |
| 2699 | Potassium fluoride | FK | |
| 2700 | K(+)(H2O)5.F | H10O5FK | |
| 2701 | Potassium trifluoroberyllate | BeF3K | |
| 2702 | KBF4 (Geo) | BF4K | |
| 2703 | Neon potassium cation (Geo) | NeK | |