Résumé
ClPd(μ-dppm)2PtCl (1) reacts with (CNC6H4–2-OCH2–)2 to form a sparingly soluble and thermally stable orange polymeric material 4. 1 reacts with 1 or 2 equivalents of CNC6H4–2-OCH3 to form the soluble A-frame d8–d8 model complexes 2 [ClPd(μ-dppm)2(μ-CNR)PtCl], and 3 [ClPd(μ-dppm)2(μ-CNR)Pt(CNR)](Cl) (R = C6H4–2-OCH3), respectively. IR (ν(NC) bridging versus terminal) and NMR data reveal an A-frame structure where the terminal CNR ligands are bonded to Pt. 4 which is amorphous (XRD) appears stable up to 290 °C (TGA), but exhibits an exothermic process between 215 and 255 °C upon the first scan in DSC, but disappears upon the second. Two compounds, model 2 (λe = 674 nm; τe = 0.38 ± 0.01 μs; Φe = 0.0079 (±10%)) and polymer 4 (λe = 660 nm; τe = 0.18 ± 0.01 μs; Φe = 0.0056 (±10%)) are luminescent at 77 K in the solid state and in fluid solution (PrCN).