Abstract
First representatives of Ag(I) scorpionates bearing tris(2-pyridyl)phosphine oxide (Py3PO), viz. [Ag(Py3PO)(PPh3)]BF4 (1) and [Ag(Py3PO)(PPh3)]ClO4 (2), have been synthesized and structurally characterized. X-ray diffraction analysis reveals that the silver atom of 1 is coordinated by Py3PO and Ph3P ligands in N,N′,N″-tripodal and P-monodentate fashions, respectively. The both complexes exhibit significant cytotoxic activity (IC50 being from 11 to 14 μM) screened in vitro against human larynx carcinoma (Hep-2) cell lines. The luminescent proprieties of the prepared scorpionates are also discussed.
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