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• W2068371586 startingPage "4093" @default.
• W2068371586 abstract "Chemical or electrochemical reduction of the 1,4,7-trithiacyclononane (9S3) complexes [MII(9S3)2][BF4]2 (M = Re (3a) or Tc (3b)) results in instantaneous C-S bond cleavage to yield ethene and the stable MIII thiolate complexes [MIII(9S3)L][BF4] (M = Re (4a) or Tc (4b), L = SCH2CH2SCH2CH2S). Compounds 4 have been characterized by 1H NMR spectroscopy, and the pseudo-octahedral geometry of 4b has been confirmed by X-ray crystallography. Upon electrochemical reduction 4a loses ethene, while 4b can be reversibly reduced to [TcII(9S3)L], which is then further reduced to Tc(I) with loss of ethene. Successive ethene loss is observed in the mass spectra of compounds 3 and 4. The radiosynthesis of 4a with 188Re can be comfortably completed within 10 min starting with 188ReO4- from a 188W/188Re generator, with a radiochemical yield in excess of 90%, and thus represents a practical approach to the preparation of stable 188Re (and 99mTc) thioether complex derivatives/conjugates for clinical use. Crystal data: 4b, C10H20S6Tc, orthorhombic Pbca, a = 12.233(2) A, b = 14.341(2) A, c = 20.726(3) A, Z = 8." @default.
• W2068371586 created "2016-06-24" @default.
• W2068371586 creator A5001550874 @default.
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• W2068371586 date "2000-08-17" @default.
• W2068371586 modified "2023-10-18" @default.
• W2068371586 title "Trithiacyclononane as a Ligand for Potential Technetium and Rhenium Radiopharmaceuticals: Synthesis of [M(9S3)(SC₂H₄SC₂H₄S)][BF₄] (M = ⁹⁹Tc, Re, ¹⁸⁸Re) via C−S Bond Cleavage" @default.
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• W2068371586 doi "https://doi.org/10.1021/ic991240m" @default.
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