A1 Vertaisarvioitu alkuperäisartikkeli tieteellisessä lehdessä
Vanadium complexes with multidentate amine bisphenols
Tekijät: Hanninen MM, Peuronen A, Damlin P, Tyystjarvi V, Kivela H, Lehtonen A
Kustantaja: The Royal Society of Chemistry
Julkaisuvuosi: 2014
Journal: Dalton Transactions
Tietokannassa oleva lehden nimi: Dalton Trans.
Vuosikerta: 43
Numero: 37
Aloitussivu: 14022
Lopetussivu: 14028
Sivujen määrä: 7
ISSN: 1477-9226
DOI: https://doi.org/10.1039/C4DT01007H
Verkko-osoite: http://dx.doi.org/10.1039/C4DT01007H
Tiivistelmä
The reaction of VO(acac)2 (acac- = acetyl acetonate) with tripodal glycine bisphenol H3L1 under an ambient atmosphere yields a hexacoordinated vanadium(iv) complex [V(acac)(L1)] (1). The corresponding reactions with tripodal 2-propanolamine bisphenol H3L2 and potentially pentadentate ethoxyethanolamine bisphenol H3L3 lead to the oxidation of the metal centre and formation of mononuclear oxovanadium(v) complexes [VO(L2)] (2) and [VO(L3)] (3){,} respectively. Alternatively{,} these latter two complexes can be prepared using VOSO4[middle dot]5H2O or VO(OPr)3 as a precursor. The CV of 1 in an ACN solution shows a reversible one-electron process at E1/2 = +1.18 V{,} whereas 2 and 3 have an irreversible redox response at -1.6 V and -1.2 V{,} respectively. Complexes 2 and 3 show moderate activity in the epoxidation of cis-cyclooctene by tert-BuOOH at 50 [degree]C.
The reaction of VO(acac)2 (acac- = acetyl acetonate) with tripodal glycine bisphenol H3L1 under an ambient atmosphere yields a hexacoordinated vanadium(iv) complex [V(acac)(L1)] (1). The corresponding reactions with tripodal 2-propanolamine bisphenol H3L2 and potentially pentadentate ethoxyethanolamine bisphenol H3L3 lead to the oxidation of the metal centre and formation of mononuclear oxovanadium(v) complexes [VO(L2)] (2) and [VO(L3)] (3){,} respectively. Alternatively{,} these latter two complexes can be prepared using VOSO4[middle dot]5H2O or VO(OPr)3 as a precursor. The CV of 1 in an ACN solution shows a reversible one-electron process at E1/2 = +1.18 V{,} whereas 2 and 3 have an irreversible redox response at -1.6 V and -1.2 V{,} respectively. Complexes 2 and 3 show moderate activity in the epoxidation of cis-cyclooctene by tert-BuOOH at 50 [degree]C.
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