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Intraligand fluorescence of Zn(II) and Pt(II) complexes of pyridoxal thiosemicarbazone

Vogler, Arnd



Abstract

Pyridoxal (vitamin B-6 aldehyde) thiosemicarbazone (B6TSC) is deprotonated to its anion (B6TSC - H+) in basic solution at pH = 9. It shows an intense green fluorescence with lambda(max) = 500 nm and a quantum yield of unity. Zn(II)(B6TSC - H+)(acetate) displays an blue-green intraligand (B6TSC) fluorescence of moderate intensity. The complex cation [Pt(II)(B6TSC)Cl](+) is isolated as ...

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