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  • Hexadecanuclear ▫$\rm{Mn^{II}_2Mn^{III}_{14}}$▫ Molecular Torus Built from in Situ Tandem Ligand Transformations
    Riaz, Muhammad ...
    A mixed-valent hexadecanuclear manganese cluster, ▫$\rm{[Mn^{II}_2Mn^{III}_{14} (\text{trz})_{14}(\text{thetach})_4 (\mu_3-O)_8 (H_2O)_{10}] (ClO_4)_6 (\mathbf{Mn16})}$▫, containing two ... ▫$\rm{[Mn^{II}}$▫ and 14 ▫$\rm{[Mn^{III}}$▫ ions, is constructed from mixed in situ generated ligands, 1,2,3-triazole (Htrz) and 1,3,5-tri(2-hydroxyethyl)-1,3,5-triazacyclohexane (▫$\rm{H_3}$▫thetach). Remarkably, both ligands were not initially added into the reaction system, and their formations involve the in situ ligand decomposition and subsequent condensation reactions. The core of ▫$\rm{\mathbf{Mn16}}$▫ is an elongated torus comprised of eight Mn atoms and four ▫$\rm{[Mn_2O_2]}$▫ subunits bridged by oxo or alkoxide. The high-resolution electrospray ionization mass spectrometry (HR-ESI-MS) of ▫$\rm{\mathbf{Mn16}}$▫ dissolved in ▫$\rm{CH_3CN}$▫ indicates its structure remains intact as +3 and +4 species. Temperature and field dependent magnetization revealed predominantly antiferromagnetic exchange interactions within the cluster. The work provides one-pot synthesis of high-nuclearity manganese clusters using the ligands generated by in situ reactions in a tandem fashion.
    Vir: Inorganic chemistry. - ISSN 0020-1669 (Vol. 58, iss. 21, Oct. 2019, str. 14331-14337)
    Vrsta gradiva - članek, sestavni del ; neleposlovje za odrasle
    Leto - 2019
    Jezik - angleški
    COBISS.SI-ID - 18819417

    Povezava(-e):

    https://doi.org/10.1021/acs.inorgchem.9b01549
    DOI

vir: Inorganic chemistry. - ISSN 0020-1669 (Vol. 58, iss. 21, Oct. 2019, str. 14331-14337)
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