Photoinduced reactions of cis,trans,cis-[Pt(IV)(N3)2(OH)2(NH3)2) with 1-methylimidazole.

ABSTRACT: The photodecomposition of cis,trans,cis-[Pt(IV)(N(3))(2)(OH)(2)(NH(3))(2)] in phosphate buffered saline (PBS), as well as in the presence of 1-methylimidazole (1-MeIm), induced by UVA light (centred at lambda=365 nm) has been studied by multinuclear NMR spectroscopy. We show that photoreduction, photoisomerisation and trans-labilisation pathways are involved. The photodecomposition pathway in PBS, which involves azide release, as detected by (14)N NMR spectroscopy, appears to differ from that in acidic aqueous conditions, under which N(2) is a product. A number of trans-{N-Pt(II)-NH(3)} species were also observed as photoproducts, as well as the release of free ammonia with a corresponding increase in pH. Oxygen was also detected as a product in solution. In the presence of 1-methylimidazo

SUBMITTER: Phillips HI 

PROVIDER: S-EPMC2935676 | biostudies-literature | 2009

REPOSITORIES: biostudies-literature