Dihydronium hexakis[bromido/chlorido(0.75/0.25)]dicadmate(II)-triphenylphosphine oxide (1/6)

In the salt, (H(3)O)(2)[Cd(2)Br(4.5)Cl(1.5)]center dot 6C(18)H(15)OP, the hydronium cation forms short O-H center dot center dot center dot O hydrogen bonds to the O atoms of the triphenylphosphine oxide units. The centrosymmetric dinuclear anion has two halide atoms functioning in a bridging mode, which confers tetrahedral coordination to the Cd atom. The three independent halide atoms are each a mixture of bromide and chloride; the occupancies of the Br atoms are 0.6434 (11), 0.7468 (11)and 0.8598 (11).