Napredna pretraga

Pregled bibliografske jedinice broj: 810833

Dioxotungsten(VI) complexes with isoniazid- related hydrazones as (pre)catalysts for olefin epoxidation: solvent and ligand substituent effects


Vrdoljak, Višnja; Pisk, Jana; Prugovečki, Biserka; Agustin, Dominique; Novak, Predrag; Matković-Čalogović, Dubravka
Dioxotungsten(VI) complexes with isoniazid- related hydrazones as (pre)catalysts for olefin epoxidation: solvent and ligand substituent effects // RSC Advances, 6 (2016), 43; 36384-36393 doi:10.1039/C6RA05067K (međunarodna recenzija, članak, znanstveni)


Naslov
Dioxotungsten(VI) complexes with isoniazid- related hydrazones as (pre)catalysts for olefin epoxidation: solvent and ligand substituent effects

Autori
Vrdoljak, Višnja ; Pisk, Jana ; Prugovečki, Biserka ; Agustin, Dominique ; Novak, Predrag ; Matković-Čalogović, Dubravka

Izvornik
RSC Advances (2046-2069) 6 (2016), 43; 36384-36393

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

Ključne riječi
Tungsten ; isoniazid ; hydrazones ; epoxidation ; solvent-free

Sažetak
The mononuclear dioxotungsten(VI) complexes [WO2(L3OMe)(D)] (1a and 1b), [WO2(L4OMe)(D)] (2a and 2b) and [WO2(LH)(D)] (3a and 3b) (D = EtOH (1a–3a) or MeOH (1b–3b) ; L3OMe = 3- methoxy-2-oxybenzaldehyde isonicotinoyl hydrazonato, L4OMe = 4-methoxy-2- oxybenzaldehyde isonicotinoyl hydrazonato, LH = 2-oxybenzaldehyde isonicotinoyl hydrazonato) were synthesized by the reaction of [WO2(acac)2]·0.5C6H5Me with the respective isoniazid-related hydrazone. The compounds were characterized by microanalysis, FT-IR and NMR spectroscopy, thermogravimetric analysis, and powder X-ray diffraction method. The crystal and molecular structures of 1a, 1b, 3a and [WO2(acac)2]·0.5C6H5Me were determined by single crystal X-ray diffraction. The structures of 1a, 1b, 3a are mononuclear and form hydrogen bonded centrosymmetric dimers. In all three complexes, the dimers are also held together by π⋯π interactions between aromatic rings. The catalytic performances (activity and selectivity) of 1a–3a and 1b–3b towards alkene epoxidation by tert-butyl hydroperoxide (TBHP) were investigated under different conditions.

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


Citati