Hafnium: compounds information

This section lists some binary compounds with halogens (known as halides), oxygen (known as oxides), hydrogen (known as hydrides), and some other compounds of hafnium. For each compound, a formal oxidation number for hafnium is given, but the usefulness of this number is limited for p-block elements in particular. Based upon that oxidation number, an electronic configuration is also given but note that for more exotic compounds you should view this as a guide only. The term hydride is used in a generic sense to indicate compounds of the type M_xH_y and not necessarily to indicate that any compounds listed behave chemically as hydrides. In compounds of hafnium (where known), the most common oxidation numbers of hafnium are: 4.

Hydrides

The term hydride is used to indicate compounds of the type M_xH_y and not necessarily to indicate that any compounds listed behave as hydrides chemically.

• Hafnium dihydride: HfH₂

Fluorides

• Hafnium tetrafluoride: HfF₄

Chlorides

• Hafnium tetrachloride: HfCl₄

Bromides

• none listed

Iodides

• Hafnium triodide: HfI₃
• Hafnium tetraiodide: HfI₄

Oxides

• Hafnium dioxide: HfO₂

Sulfides

• Hafnium disulphide: HfS₂

Selenides

• Hafnium diselenide: HfSe₂

Tellurides

• none listed

Nitrides

• Hafnium nitride: HfN

Carbonyls

• Hafnium heptacarbonyl: Hf(CO)₇

Complexes

• none listed