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• W4377010954 endingPage "8248" @default.
• W4377010954 startingPage "8232" @default.
• W4377010954 abstract "The synthesis of a series of Pt{κ3-N,C,N′-[L]}X (X = Cl, RC≡C) pincer complexes derived from purine and purine nucleosides is reported. In these complexes, the 6-phenylpurine skeleton provides the N,C-cyclometalated fragment, whereas an amine, imine, or pyridine substituent of the phenyl ring supplies the additional N′-coordination point to the pincer complex. The purine N,C-fragment has two coordination positions with the metal (N1 and N7), but the formation of the platinum complexes is totally regioselective. Coordination through the N7 position leads to the thermodynamically favored [6.5]-Pt{κ3-N7,C,N′-[L]}X complexes. However, the coordination through the N1 position is preferred by the amino derivatives, leading to the isomeric kinetic [5.5]-Pt{κ3-N1,C,N′-[L]}X complexes. Extension of the reported methodology to complexes having both pincer and acetylide ligands derived from nucleosides allows the preparation of novel heteroleptic bis-nucleoside compounds that could be regarded as organometallic models of Pt-induced interstrand cross-link. Complexes having amine or pyridine arms are green phosphorescence emitters upon photoexcitation at low concentrations in CH2Cl2 solution and in poly(methyl methacrylate) (PMMA) films. They undergo self-quenching at high concentrations due to molecular aggregation. The presence of intermolecular π–π stacking and weak Pt···Pt interactions was also observed in the solid state by X-ray diffraction analysis." @default.
• W4377010954 created "2023-05-19" @default.
• W4377010954 creator A5007664572 @default.
• W4377010954 creator A5018346265 @default.
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• W4377010954 creator A5048834353 @default.
• W4377010954 creator A5074901224 @default.
• W4377010954 creator A5079497892 @default.
• W4377010954 creator A5083946729 @default.
• W4377010954 creator A5090236062 @default.
• W4377010954 date "2023-05-18" @default.
• W4377010954 modified "2023-10-17" @default.
• W4377010954 title "Synthesis, Structure, and Photophysical Properties of Platinum(II) (<i>N</i>,<i>C</i>,<i>N</i>′) Pincer Complexes Derived from Purine Nucleobases" @default.
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