Coordination polymers [Gd2(5-iip)3(DMF)4]·0.4DMF (1) and [Dy2(5-iip)3DMF2] ·0.33DMF (2) (5-iip2−—5-iodoisophthalate) feature two different structural types, as follows from X-ray diffractometry data. We prepared and characterized an extended series of corresponding heterometallic complexes of the composition [GdxDy2−x(5-iip)3DMF2]·0.33DMF and [EuxDy2−x(5-iip)3DMF2]·0.33DMF, where x = 0.2, 0.4. . .1.8, and examined the changes of their luminescent properties induced by variations of metal composition, finding the promising white emission sources with high light purity.
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