Chlorine and oxygen can bond in many ways:
chlorine monoxide, ClO, chlorine(II) oxidechlorine dioxide, ClO
2, chlorine(IV) oxidechloroperoxyl, ClOOchlorine trioxide, ClO3, chlorine(VI) oxidedichlorine monoxide, Cl2O, chlorine(I) oxideThree dichlorine dioxides:ClO dimer, Cl2O2, chlorine(I) peroxidechloryl chloride, ClO2Cl, chlorine(0,IV) oxidechlorine chlorite, ClOClO, chlorine(I,III) oxidedichlorine trioxide, Cl2O3, chlorine(I,V) oxidedichlorine tetroxide, also known as chlorine perchlorate, ClOClO3, chlorine(I,VII) oxidedichlorine hexoxide, chloryl perchlorate, Cl2O6, chlorine(V,VII) oxidedichlorine heptoxide, Cl2O7, chlorine(VII) oxidechlorine tetroxidechlorine(VII) oxide peroxide, (OClO3)2Several ions are also chlorine oxides:
chloryl, ClO+
2perchloryl, ClO3+hypochlorite, ClO−chlorite, ClO2−chlorate, ClO3−perchlorate, ClO4−