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FeII/III and MnII complexes based on 2,4,6-tris(2-pyridyl)-triazine: synthesis, structures, magnetic and biological properties.
Darii, Mariana; Mikosch, Annabel; van Leusen, Jan; Kravtsov, Victor Ch; Dvornina, Elena G; Clapco, Steliana T; Ciloci, Alexandra; Kögerler, Paul; Baca, Svetlana G.
Afiliación
  • Darii M; Institute of Applied Physics, Academiei 5 MD2028 Chisinau Moldova svetlana.baca@ifa.md.
  • Mikosch A; Institute of Inorganic Chemistry, RWTH Aachen University Landoltweg 1 52074 Aachen Germany paul.koegerler@ac.rwth-aachen.de.
  • van Leusen J; Institute of Inorganic Chemistry, RWTH Aachen University Landoltweg 1 52074 Aachen Germany paul.koegerler@ac.rwth-aachen.de.
  • Kravtsov VC; Institute of Applied Physics, Academiei 5 MD2028 Chisinau Moldova svetlana.baca@ifa.md.
  • Dvornina EG; Institute of Microbiology and Biotechnology, Academiei 1 MD2028 Chisinau Moldova.
  • Clapco ST; Institute of Microbiology and Biotechnology, Academiei 1 MD2028 Chisinau Moldova.
  • Ciloci A; Institute of Microbiology and Biotechnology, Academiei 1 MD2028 Chisinau Moldova.
  • Kögerler P; Institute of Inorganic Chemistry, RWTH Aachen University Landoltweg 1 52074 Aachen Germany paul.koegerler@ac.rwth-aachen.de.
  • Baca SG; Institute of Applied Physics, Academiei 5 MD2028 Chisinau Moldova svetlana.baca@ifa.md.
RSC Adv ; 12(45): 29034-29047, 2022 Oct 11.
Article en En | MEDLINE | ID: mdl-36320764
Reaction of the polypyridyl ligand 2,4,6-tris(2-pyridyl)-s-triazine (tpt) with mono- and polynuclear Fe(iii) or Mn(ii) precursors, specifically tri- or hexanuclear Fe(iii) pivalates (piv-), [Mn6O2(piv)10(Hpiv)4] and Mn(ii) isobutyrate (ib-), in various solvents and under various reaction conditions showcase the ligand's surprising coordination characteristics. The reactions result in mononuclear [FeIII(tpt)(tptH)][FeIIICl4]4·2(thf)·0.23(H2O) (1), [FeIII(piv)(tpt)Cl2] (2), [FeII(tpt)Cl2]·2(H2O) (3a), dinuclear [FeIII 2O(tpt)2Cl4] (3), and heptanuclear [FeIII 7O4(piv)12(tpt-O)]·A [A = MeCN (4a) or 4(dioxane) (4b)] and [FeIII 7O4(piv)11(tpt-O)(i-PrO)(i-PrOH)]·0.75(i-PrOH) (5), as well as the mononuclear compounds [MnII(tpt)(NO3)(H2O)2](NO3) (6) and [MnII(tpt)(ib)(Cl)(MeOH)]·MeOH (7). Single-crystal X-ray diffraction analyses identify tpt as a tridentate NNN donor ligand that forms two five-membered metallocycles in 1-3, 6 and 7, whereas in 4 and 5 five tpt N atoms form coordinative bonds accompanied by an unusual metal-induced oxidation of one of the carbon atoms of the central triazine core. Magnetic properties of Fe(iii)-tpt (2-5), Fe(ii)-tpt (3a), and Mn(ii)-tpt (7) compounds show dominant antiferromagnetic coupling for polynuclear coordination cluster compounds. The Mn(ii)-tpt complexes 6 and 7 exhibit efficient catalytic properties in the production of enzymes by microorganisms, which concerns the synthesis of exocellular proteases in Fusarium gibbosum CNMN FD 12 or Trichoderma koningii Oudemans CNMN FD 15 fungi strains. Thus, compounds 6 and 7 can be used for producing proteolytic enzymes with wide applications including in the food, detergents and pharmaceutical industries.
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Texto completo: 1 Colección: 01-internacional Base de datos: MEDLINE Tipo de estudio: Prognostic_studies Idioma: En Revista: RSC Adv Año: 2022 Tipo del documento: Article Pais de publicación: Reino Unido
Texto completo
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Texto completo: 1 Colección: 01-internacional Base de datos: MEDLINE Tipo de estudio: Prognostic_studies Idioma: En Revista: RSC Adv Año: 2022 Tipo del documento: Article Pais de publicación: Reino Unido