The ternary systems (AH)₂[CdI₄]#(AH)I # chloroform (I), dichloretan(II) or nitrobenzol (III) are investigated. A # diantipyrylmethane (IV). In I environment it is formed adduct (AH)₂[CdI₄]•(AH)I.

Character of change will carry out an electricity, viscosity izomaliarian solutions confirms structure adduct. The method of solubility finds a constant of reaction (AH)₂[CdI₄]+(AH)I = (AH)₂[CdI₄]• (AH)I, K_ср. = 0,61. The structure adduct is impossible to express the formula (AH)₃[CdI₅] Cadmium well extractions from iodide solutions in conditions of surplus in (AH)I I, hence, may not be part 3⁺anions, not capable to extraction IV. Connection (AH)₂[CdI₄] is bad let#s dissolve in IV and water solutions, therefore is allocated in a deposit at extractions macroquantity Сd²⁺ # if in I there is no surplus IV. In the environment II and III adducts is absent, solubility (AH)_{2<.sub>[CdI4] considerably grows and Сd²⁺ is taken practically stechiometrical by quantity IV.}