Abstract
Treatment of dichlorobis(piperidine-1-carbonitrile)platinum(II) with potassium iodide in water/methanol mixture results in the halide ligand exchange giving novel <i>trans</i>-diiodobis(piperidine-1-carbonitrile)platinum(II) complex. The reaction proceeds under mild conditions (20°C, 40 min) giving <i>trans</i>-[PtI<sub>2</sub>(NCNC<sub>5</sub>H<sub>10</sub>)<sub>2</sub>] in 70% isolated yield. The iodide complex was characterized by IR, <sup>1</sup>H and <sup>13</sup>C NMR spectroscopies, and high resolution ESI-MS, and its structure was determined by a single crystal X-ray diffraction.
Highlights
Interest in metal complexes bearing NCR (R = Alk, Ar, NAlk2) ligands is stimulated by enhanced reactivity of nitrile functionality in such compounds toward nucleophilic addition and 1,3-dipolar cycloaddition [1, 2]
The iodide complex was characterized by IR, 1H and 13C NMR spectroscopies, and high resolution electrospray ionization (ESI)-MS, and its structure was determined by a single crystal X-ray diffraction
Our recent results demonstrate unexpectedly high activity of platinum(II)-bound push-pull nitriles NCNAlk2 toward cycloaddition of nitrones and nucleophilic additions [3]. Following this project focused on investigations of unusual reactivity of push-pull nitrile ligands, we studied novel platinum(II) complex bearing push-pull dialkylcyanamide ligands
Summary
Interest in metal complexes bearing NCR (R = Alk, Ar, NAlk2) ligands is stimulated by enhanced reactivity of nitrile functionality in such compounds toward nucleophilic addition and 1,3-dipolar cycloaddition [1, 2]. These metal-mediated processes allow the conductance of the reactions, which are not feasible without involvement of metal centers. Our recent results demonstrate unexpectedly high activity of platinum(II)-bound push-pull nitriles NCNAlk toward cycloaddition of nitrones and nucleophilic additions [3] Following this project focused on investigations of unusual reactivity of push-pull nitrile ligands, we studied novel platinum(II) complex bearing push-pull dialkylcyanamide ligands
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