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Oxometalate detection: A new catechol–[ReI(2,2′-bpy)(py)(CO)3]+ (bpy=bipyridine, py=pyridine) conjugate has been prepared which signals the presence and concentration of molybdate, vanadate, and/or tungstate ions in solution in aqueous acetonitrile by efficient quenching of the Re-based luminescence (see picture).
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Peacock et al. (2005) studied this question.
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