Chlorine and oxygen can bond in a number of ways:
chlorine monoxide radical, , chlorine (II) oxide radical chloroperoxyl radical, , chlorine (II) peroxide radical chlorine dioxide, , chlorine (IV) oxide chlorine trioxide radical, , chlorine (VI) oxide radical chlorine tetroxide radical, , chlorine (VII) oxide radical dichlorine monoxide, , chlorine (I) oxide chlorine peroxide, , dimer of chlorine monoxide radical or ClO dimer, chlorine (I) peroxide chloryl chloride, , chlorine (0,IV) oxide chlorine chlorite, , chlorine (I,III) oxide dichlorine trioxide, as , chlorine (III,V) oxide dichlorine trioxide, as possible isomer , chlorine (I,V) oxide dichlorine trioxide, as hypothetical isomer , chlorine (III) oxide dichlorine tetroxide, also known as chlorine perchlorate, or , chlorine (I,VII) oxide dichlorine pentoxide, or , is hypothetical dichlorine hexoxide or chloryl perchlorate, or , chlorine (V,VII) oxide dichlorine heptoxide, , chlorine (VII) oxide dichlorine octoxide, chlorine (VII) oxide peroxide or dimer of chlorine tetroxide radical, or
Several ions are also chlorine oxides: chloryl, perchloryl, hypochlorite, chlorite, chlorate, perchlorate,
See also Oxygen fluoride(s), bromine oxide(s), iodine oxide(s) – analogous oxygen halide and halogen oxides Sulfur fluoride(s), sulfur chloride(s), sulfur bromide(s), sulfur iodide(s) – analogous sulfur halides, some of which are valence isoelectronic with chlorine oxides.
References Chlorine oxoacids and structure of dichlorine oxides. Chem. Educator, Vol. 16, 2011, vol. 16, pp. 275—278