This section lists some binary compounds with halogens (known as halides), oxygen (known as oxides), hydrogen (known as hydrides), and some other compounds of aluminium. For each compound, a formal oxidation number for aluminium is given, but the usefulness of this number is limited forp-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.

In compounds of aluminium (where known), the most common oxidation numbers of aluminium are:3.

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.

• Aluminium trihydride: AlH₃

Fluorides

• Aluminium trifluoride: AlF₃

Chlorides

• Dialuminium hexachloride: AlCl₃

Bromides

• Dialuminium hexabromide: [AlBr₃]₂

Iodides

• Dialuminum hexaiodide: [AlI₃]₂

Oxides

• Aluminium oxide (α): Al₂O₃

Sulfides

• Dialuminium trisulphide: Al₂S₃

Selenides

• Dialuminium triselenide: Al₂Se₃

Tellurides

• Dialuminium tritelluride: Al₂Te₃

Nitrides

• Aluminium nitride: AlN

Carbonyls

• none listed

Complexes

• Aluminium trinitrate nonahydrate: Al(NO₃)₃.9H₂O
• Dialuminium trisulphate octadecahydrate: Al₂(SO₄)₃.18H₂O
• Hexaaquoaluminium tribromide: [Al(OH₂)₆]Br₃
• Hexaaquoaluminium trichloride: [Al(OH₂)₆]Cl₃