Pasika: Iridium inoumba makomputa mune oxidation nyika pakati -3 uye +9; iyo yakanyanya kuwanda oxidation nyika ndeye +3 uye +4. Mienzaniso yakanyatsoratidzwa yeiyo yakakwira +6 oxidation nyika iri pamusoro apa isingawanzoitika, asi inosanganisira IrF6 uye maviri akasanganiswa okisijeni Sr2MgIrO6 uye Sr2CaIrO6. Mukuwedzera, zvakataurwa muna 2009 kuti iridium (((VIII) oxide (IrO4) yakagadzirirwa pasi pematrix yekuparadzanisa mamiriro (6 K muAr) ne UV irradiation ye iridium-peroxo complex. Mhando iyi, zvisinei, haitarisirwi kuve yakagadzikana seyakasimba yakasimba yakasimba pamatembiricha akakwirira. Iyo yepamusoro oxidation nyika (+9), iyo zvakare yakanyanya kunyorwa kune chero chinhu, inozivikanwa chete mune imwe oxidation, cO4; Iridium inozivikanwa chete segasi-phase mhando uye haizivikanwe kuumba chero yakaderedzwa oxidation nyika. Iridium ine yakakwira +18-hydroxide, iri pamusoro pe +11-hydroxide, uye +18-hydroxide. Ir
IrH4−5 uye 18-electron IrH5−4 anion