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Pregled bibliografske jedinice broj: 869699

Intriguing binding modes of tetradentate pyridoxal derivatives to molybdenum centre


Pisk, Jana; Prugovečki, Biserka; Jednačak, Tomislav; Novak, Predrag; Vrdoljak, Višnja
Intriguing binding modes of tetradentate pyridoxal derivatives to molybdenum centre // Polyhedron, 127 (2017), 337-344 doi:10.1016/j.poly.2017.02.023 (međunarodna recenzija, članak, znanstveni)


Naslov
Intriguing binding modes of tetradentate pyridoxal derivatives to molybdenum centre

Autori
Pisk, Jana ; Prugovečki, Biserka ; Jednačak, Tomislav ; Novak, Predrag ; Vrdoljak, Višnja

Izvornik
Polyhedron (0277-5387) 127 (2017); 337-344

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

Ključne riječi
Molybdenum(VI) complexes, pyridoxal, tetradentate ligands, bridging ligands

Sažetak
The Schiff base pdxen ligands (H2py2en = N, N′- ethylenebis(pyridoxylideneimine) and H2py2pren = N, N′-prophylenebis(pyridoxylideneimine)) were found to form readily by the mechanochemical synthesis from their corresponding diamine and pyridoxal. Reduction of the Schiff bases with NaBH4 yielded reduced pdxan ligands (H2Rpy2en = N, N′- ethylenebis(pyridoxylamine) and H2Rpy2pren = N, N′-prophylenebis(pyridoxylamine)). A dinuclear molybdenum(VI) complex with the bridging pdxen ligand [{; ; ; ; ; MoO2}; ; ; ; ; 2(μ-py2en) (OMe)2(MeOH)2]⋅3MeOH (1⋅3MeOH), and mononuclear complexes with the pdxen ligand [MoO2(py2pren)] (3), as well as with the pdxan ligands: [MoO2(Rpy2en)] (2) and [MoO2(Rpy2pren)] (4) were prepared and characterized. Significant differences in the coordination of the Schiff base ligands were found as a consequence of chain length and ligand flexibility. Complexes 1–4 were obtained either by the reaction of [MoO2(acac)2] or [Mo(CO)6] with the corresponding ligands. Crystal and molecular structures of complexes 1⋅3MeOH, 2 and 3 were determined by the single crystal X-ray diffraction method. All complexes were characterized by microanalysis, FT-IR, NMR, UV, thermogravimetric analysis and powder X-ray diffraction method.

Izvorni jezik
Engleski

Znanstvena područja
Kemija



POVEZANOST RADA


Projekt / tema
119-1191342-1082 - Novi kompleksni spojevi i materijali-kemijski i biološki katalizatori (Marina Cindrić, )
119-1191342-1083 - Interakcije i dizajn bioaktivnih molekula (Predrag Novak, )
119-1193079-1084 - Strukturno istraživanje bioloških makromolekula metodom rentgenske difrakcije (Dubravka Matković-Čalogović, )

Ustanove
Prirodoslovno-matematički fakultet, Zagreb

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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