Hydrogen Iridi-nitrite, H₃Ir(NO₂)₆

Hydrogen Iridi-nitrite, H₃Ir(NO₂)₆, is stated by Gibbs to crystallise in yellow prisms which are readily soluble in water. The hydrogen may be replaced by metals yielding a series of salts known as iridi-nitrites, of general formula M₃Ir(NO₂)₆, and analogous to the cobalti- nitrites and rhodi-nitrites already considered.