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Thiouracils characterization

Eisenberg and Lee have reported another case of a pressure-induced luminescence [56]. The thiouracil complex shown below in Scheme 5 contains a binuclear Au(I) complex with a short Au Au separation of 2.8797(4) A when the non-coordinated anion is trifluoroacetate. In crystalline form this complex displays a weak white luminescence, but upon grinding an intense blue luminescence is observed. This transformation is accompanied by liberation of acid vapor and the deprotonation of the uncoordinated nitrogen atom of the heterocycle. The resulting product has been independently prepared and crystallographically characterized. In this form a pair of the binuclear complexes are connected by a short (2.9235(4) A) Au Au interaction. [Pg.34]

See other pages where Thiouracils characterization is mentioned: [Pg.108]    [Pg.143]    [Pg.108]    [Pg.975]    [Pg.1048]    [Pg.338]    [Pg.347]    [Pg.536]    [Pg.108]    [Pg.1825]    [Pg.560]    [Pg.5]    [Pg.535]    [Pg.1048]    [Pg.51]    [Pg.4502]    [Pg.5848]    [Pg.142]    [Pg.158]    [Pg.340]   
See also in sourсe #XX -- [ Pg.40 , Pg.81 ]



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Thiouracils

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