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• W2066017043 endingPage "9864" @default.
• W2066017043 startingPage "9852" @default.
• W2066017043 abstract "Oxidation of the acetate-bridged half-lantern platinum(II) complex cis-[PtII(NH3)2(μ-OAc)2PtII(NH3)2](NO3)2, [1](NO3)2, with iodobenzene dichloride or bromine generates the halide-capped platinum(III) species cis-[XPtIII(NH3)2(μ-OAc)2PtIII(NH3)2X](NO3)2, where X is Cl in [2](NO3)2 or Br in [3](NO3)2, respectively. These three complexes, characterized structurally by X-ray crystallography, feature short (≈2.6 Å) Pt–Pt separations, consistent with formation of a formal metal–metal bond upon oxidation. Elongated axial Pt–X distances occur, reflecting the strong trans influence of the metal–metal bond. The three structures are compared to those of other known dinuclear platinum complexes. A combination of 1H, 13C, 14N, and 195Pt NMR spectroscopy was used to characterize [1]2+–[3]2+ in solution. All resonances shift downfield upon oxidation of [1]2+ to [2]2+ and [3]2+. For the platinum(III) complexes, the 14N and 195Pt resonances exhibit decreased line widths by comparison to those of [1]2+. Density functional theory calculations suggest that the decrease in the 14N line width arises from a diminished electric field gradient at the 14N nuclei in the higher valent compounds. The oxidation of [1](NO3)2 with the alternative oxidizing agent bis(trifluoroacetoxy)iodobenzene affords the novel tetranuclear complex cis-[(O2CCF3)PtIII(NH3)2(μ-OAc)2PtIII(NH3)(μ-NH2)]2(NO3)4, [4](NO3)4, also characterized structurally by X-ray crystallography. In solution, this complex exists as a mixture of species, the identities of which are proposed." @default.
• W2066017043 created "2016-06-24" @default.
• W2066017043 creator A5034625027 @default.
• W2066017043 creator A5046662341 @default.
• W2066017043 date "2012-09-04" @default.
• W2066017043 modified "2023-09-25" @default.
• W2066017043 title "Acetate-Bridged Platinum(III) Complexes Derived from Cisplatin" @default.
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