| Oxidation State | Substances |
| Zr-II | [Zr (CO)6 ]2- |
| Zr0 | [Zr (bipiridil)3 ], |
| [Zr (CO)5 (Me2PCH2CH2PMe2 )] | |
| ZrI | ZrCl ? |
| ZrII | ZrO, ZrCl2 |
| ZrIII | ZrCl3 , ZrBr3 , ZrI3 , Zr+3 reduces H2O |
| ZrIV | ZrO2 , Zr (OH)3+ (aq), ZrF4 , |
| ZrCl4 , etc., ZrF62-,ZrF73-, ZrF84-, | |
| ziconates, complexes |
