Gutenberg Open Science

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  • Item type: Item , ZeitschriftenaufsatzAccess status: Open Access ,
    (3Z)-4-Methyl-9-(4-methyl­benzene­sulfon­yl)-N-phenyl-3H,9H-thio­pyrano[3,4-b]indol-3-imine
    (2025) Dassonneville, Benjamin; Detert, Heiner; Schollmeyer, Dieter
    The title indolothiopyrane imine, C25H20N2O2S2, which was prepared by a [2 + 2 + 2] cycloaddition reaction, crystallizes with two molecules in the asymmetric unit. Both adopt the shape of a staircase with two steps, consolidated by intramolecular C—H⋯O interactions.
  • Item type: Item , ZeitschriftenaufsatzAccess status: Open Access ,
    4,12-Diselena-5,6,13,14-tetra­aza­tri­cyclo­[9.3.0.03,7]tetra­deca-1(11),3(7),5,13-tetra­ene
    (2025) Schollmeyer, Dieter; Detert, Heiner
    In the title com­pound, C8H8N4Se2, two almost planar 1,2,3-selena­diazo­les are annulated to a cyclo­octa-1,4-diene with a boat–chair conformation, giving the mol­ecule a butterfly shape.
  • Item type: Item , ZeitschriftenaufsatzAccess status: Open Access ,
    2-[2,5-Dimeth­­oxy-4-(3-nitro­pyridin-2-yl)phen­yl]-3-nitro­pyridine
    (2025) Geffe, Mario; Detert, Heiner; Schollmeyer, Dieter
    The title compound, C18H14N4O6, was prepared in a larger project on condensed heterocycles with a focus on the Cadogan reaction. Extension of this method to multiple Cadogan reactions was explored as a way to larger conjugated systems. A twofold Suzuki reaction on a central diboronic acid and chloro­nitro­pyridine gave the bis­(3-nitro­pyridin-2-yl)benzene.