Abstract
Several naphthyl-based N^N^C ligands were synthesized by strategically incorporating a bromide or iodide at the 8-position of the naphthyl ring. When allowed to react with the platinum tetra methyl dimer, PtMe4(μ-SMe2)2, the more rare six-membered platinum(IV) platinacycles were formed by oxidative addition of the C(sp2)–X bond. In a separate case, C–H activation at the 8-position was encouraged by having the 2-position ‘blocked’ with a methyl group thus a six-membered platinum(II) platinacycle was formed by C(sp2)–H activation at the 8-position. Products were characterized by XRD, NMR, UV/vis, emission spectroscopy, and HRMS. The platinum(IV) compounds were inert to thermolysis. The complexes appear to exhibit dual fluorescence and phosphorescence at room temperature in solution.
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