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• W1998367070 endingPage "7698" @default.
• W1998367070 startingPage "7691" @default.
• W1998367070 abstract "An unusual 2:1 aggregate between the complex trans-[PtCl(CH3)(DMSO)2] (1; DMSO = dimethyl sulfoxide) and the organotin compound bis(μ3-oxo)bis(μ-chloro)bis(μ-dimethyltin(IV))bis(chlorodimethyltin(IV)) [Cl(CH3)2SnOSn(CH3)2Cl]2 has been isolated and characterized by X-ray analysis. The crystals belong to the triclinic space group P1̄ with lattice constants a = 9.373(2) Å, b = 9.576(1) Å, c = 14.087(3) Å, α = 70.29(1)°, β = 72.50(1)°, γ = 72.21(2)°, and Z = 2. Least-squares refinement of the structure led to an R factor of 2.37%. 1H, 13C, and 195Pt NMR measurements revealed that in chloroform solution complex 1 gives a mixture of four different species, which have been unambiguously identified as the starting complex 1 in equilibrium with cis-[PtCl(CH3)(DMSO)2] and the two corresponding isomeric aqua-species cis and trans-[PtCl(CH3)(DMSO)(OH2)]. The 195Pt NMR magnetization transfer technique allowed determination of the rate of interconversion among the various complexes, showing that the direct trans−cis isomerism between the [PtCl(CH3)(DMSO)2] species is negligible and that the geometrical interconversion occurs through a water-catalyzed pathway. The exchange between free and coordinated DMSO in cis- and trans-[PtCl(CH3)(DMSO)2] has been measured by 1H NMR magnetization transfer experiments. The molecule of DMSO in the position trans to a methyl group was found to be 10-fold more labile than that trans to another sulfur bonded dimethyl sulfoxide. The reactivity of complex 1 in chloroform with a series of monodentate nitrogen ligands having widely different electronic and steric properties has been investigated by 1H NMR spectroscopy. The utility of this system as precursor for the synthesis of cis- and trans-[PtCl(CH3)(DMSO)(am)] is discussed together with the evidence for the factors promoting the prevalence of a geometrical configuration." @default.
• W1998367070 created "2016-06-24" @default.
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• W1998367070 date "1996-01-01" @default.
• W1998367070 modified "2023-10-17" @default.
• W1998367070 title "<i>trans</i>-Chloromethylbis(dimethyl sulfoxide)platinum(II): X-ray Structure, Mechanism of Isomerization, and Its Use as a Precursor to Organoamine Complexes of Variable Geometrical Configurations" @default.
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• W1998367070 doi "https://doi.org/10.1021/ic960428s" @default.
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