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Pregled bibliografske jedinice broj: 584315

Thermodynamics and electrochemistry of manganese ortho-tetrakis(N-n-butylpyridinium-2-yl)porphyrin in aqueous solutions


Budimir, Ana; Šmuc, Tomislav; Weitner, Tin; Batinić-Haberle, Ines; Biruš, Mladen
Thermodynamics and electrochemistry of manganese ortho-tetrakis(N-n-butylpyridinium-2-yl)porphyrin in aqueous solutions // Journal of coordination chemistry, 63 (2010), 14/16; 2750-2765 doi:10.1080/00958972.2010.502571 (međunarodna recenzija, članak, znanstveni)


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Naslov
Thermodynamics and electrochemistry of manganese ortho-tetrakis(N-n-butylpyridinium-2-yl)porphyrin in aqueous solutions

Autori
Budimir, Ana ; Šmuc, Tomislav ; Weitner, Tin ; Batinić-Haberle, Ines ; Biruš, Mladen

Izvornik
Journal of coordination chemistry (0095-8972) 63 (2010), 14/16; 2750-2765

Vrsta, podvrsta i kategorija rada
Radovi u časopisima, članak, znanstveni

Ključne riječi
manganese tetra(ortho-n-butylpyridyl)porphyrin; thermodynamics; electrochemistry; ionic strength; proton dissociation

Sažetak
Spectrophotometric pH-titrations (1<pH<12) of manganese ortho-tetrakis(N-n-butylpyridinium-2-yl)porphyrin (MnTnBu-2-PyP) have been performed in aqueous solution at various temperatures and ionic strengths, studying complexes of various manganese oxidation states (Mn(II)–(IV)). The observed results indicate three absorbing species of MnIIITnBu-2-PyP, but only two absorbing species of MnIITnBu-2-PyP and MnIVTnBu-2-PyP within the studied acidity range. The first and second deprotonation constants are related to fully protonated and monodeprotonated species, i.e., the aqua and hydroxo complexes, respectively. The same complexes have been studied by cyclic-voltammetry and the results can be summarized as follows: E 0′(MnIIITnBu-2-PyP /MnIITnBu-2-PyP(H2O)4+) = +0.203 V, E 0′(MnIIITnBu-2-PyP(H2O)(OH)4+/MnIITnBu-2-PyP(OH)3+) = +0.191 V, and E 0′(MnIVTnBu-2-PyP(H2O)(OH)5+/MnIIITnBu-2-PyP ) = +0.62 V, all versus NHE. In neutral and acidic media the oxidation of the aqua Mn(III) complex may also occur as a one-electron two-proton process yielding the oxoaqua Mn(IV) complex.

Izvorni jezik
Engleski

Znanstvena područja
Kemija



POVEZANOST RADA


Projekt / tema
006-0061247-0009 - Kinetika i mehanizam katalitičkog antioksidacijskog djelovanja Mn-porfirina (Ana Budimir, )

Ustanove
Farmaceutsko-biokemijski fakultet, Zagreb

Profili:

Avatar Url Ana Budimir (autor)

Avatar Url Mladen Biruš (autor)

Avatar Url Ines Batinić-Haberle (autor)

Avatar Url Tomislav Šmuc (autor)

Avatar Url Tin Weitner (autor)

Citiraj ovu publikaciju

Budimir, Ana; Šmuc, Tomislav; Weitner, Tin; Batinić-Haberle, Ines; Biruš, Mladen
Thermodynamics and electrochemistry of manganese ortho-tetrakis(N-n-butylpyridinium-2-yl)porphyrin in aqueous solutions // Journal of coordination chemistry, 63 (2010), 14/16; 2750-2765 doi:10.1080/00958972.2010.502571 (međunarodna recenzija, članak, znanstveni)
Budimir, A., Šmuc, T., Weitner, T., Batinić-Haberle, I. & Biruš, M. (2010) Thermodynamics and electrochemistry of manganese ortho-tetrakis(N-n-butylpyridinium-2-yl)porphyrin in aqueous solutions. Journal of coordination chemistry, 63 (14/16), 2750-2765 doi:10.1080/00958972.2010.502571.
@article{article, year = {2010}, pages = {2750-2765}, DOI = {10.1080/00958972.2010.502571}, keywords = {manganese tetra(ortho-n-butylpyridyl)porphyrin, thermodynamics, electrochemistry, ionic strength, proton dissociation}, journal = {Journal of coordination chemistry}, doi = {10.1080/00958972.2010.502571}, volume = {63}, number = {14/16}, issn = {0095-8972}, title = {Thermodynamics and electrochemistry of manganese ortho-tetrakis(N-n-butylpyridinium-2-yl)porphyrin in aqueous solutions}, keyword = {manganese tetra(ortho-n-butylpyridyl)porphyrin, thermodynamics, electrochemistry, ionic strength, proton dissociation} }

Časopis indeksira:


  • Current Contents Connect (CCC)
  • Web of Science Core Collection (WoSCC)
    • Science Citation Index Expanded (SCI-EXP)
    • SCI-EXP, SSCI i/ili A&HCI
  • Scopus


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