Blar i forfatter "Capar, Jan"

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    • Demetalation of copper undecaarylcorroles: Molecular structures of a free-base undecaarylisocorrole and a gold undecaarylcorrole 

      Capar, Jan; Zonneveld, Job; Berg, Steffen; Isaksson, Johan; Gagnon, Kevin J.; Kolle, Ekaney Thomas; Ghosh, Abhik (Journal article; Tidsskriftartikkel; Peer reviewed, 2016-06-27)
      Copper undecaarylcorroles were found to undergo acid-induced demetalation with unusual ease under both reductive and nonreductive conditions. The resulting free-base undecaarylcorroles were found to be rather reactive, readily photooxygenating to yield 5/10-hydroxyisocorroles and open-chain tetrapyrroles. The use of nonreductive conditions led to 50-75% yields of undecaarylisocorroles, a new class ...

    • Ligand noninnocence in FeNO corroles: insights from β-octabromocorrole complexes 

      Norheim, Hans-Kristian; Capar, Jan; Einrem, Rune; Gagnon, Kevin J.; Beavers, Christine; Vazquez-Lima, Hugo; Ghosh, Abhik (Journal article; Tidsskriftartikkel; Peer reviewed, 2015-11-30)
      The first FeNO octabromocorroles have been synthesized including four β-octabromo-meso-tris(p-X-phenyl)corrole derivatives Fe[Br8TpXPC](NO) (X = CF3, H, CH3, OCH3) and the β-octabromo-meso-tris(pentafluorophenyl)corrole complex, Fe[Br8TPFPC](NO). The last complex, which proved amenable to single-crystal X-ray structure determination, exhibits the geometry parameters: Fe–N(O) 1.643(8) Å, N–O 1.158(9) ...

    • Synthesis of Sterically Hindered Macrocyclic Ligands via Demetalation of Metallocorroles 

      Capar, Jan (Doctoral thesis; Doktorgradsavhandling, 2016-06-07)
      Despite important developments in synthetic corrole chemistry, the field has long been handicapped by the lack of procedures for demetalation of metallocorroles. This thesis presents general demetalation methods for metallocorroles. A reductive demetalation method was developed using concentrated H2SO4 with 5-200 equivalent of FeCl2 or SnCl2 as a reducing agent. The method proved to be quite general ...