A new hetero-tetrametallic complex, Os[(µ-2,3-dpp)Ru(bpy)2]38+(1), where 2,3-dpp = bis(2-pyridyl)pyrazine and bpy = 2,2′-bipyridine, has been prepared from the reaction of Os(2,3-dpp)32+ with Ru(bpy)2Cl2: luminescence of (1) takes place from the central Os-containing core, which collects the energy absorbed by the peripheral Ru-containing chromophores (antenna effect).
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Campagna et al. (1989) studied this question.