摘要 |
Metal complexes of an azo compound which conforms to the formula (I) or one of its tautomeric structures (see above formula) wherein R and R' are independently OH, NH2, NH-CN, acylamino or arylamino, R1 and R1' are independently -OH or -NH2, and which contain at least one guest compound, characterized in that the metal complexes correspond to the mono-, di-, triand tetraanions of the azo compounds of the formula (I) with the metals selected from the group consisting of Ca, Zn, Cu, Fe, Co, Sr, Ba, Cr, Sn, Al, Mg, Cd, Pb and La.
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