768370-65-6Relevant academic research and scientific papers
Dinuclear MoV Complexes with Thiophenolate-oxazoline Ligands: Synthesis, Characterization, and Exceptional Activity in Catalytic Olefin Epoxidation
Peschel, Lydia M.,Belaj, Ferdinand,Schachner, J?rg A.,M?sch-Zanetti, Nadia C.
, p. 2808 - 2817 (2017)
The synthesis, characterization, and epoxidation catalysis of two neutral, dinuclear molybdenum(V) complexes [{MoO(Lx)(μ-O)}2] (x = 1: 1; x = 2: 2) bearing S,N-bidentate thiophenolate-oxazoline ligands (L1, L2) are described. Both complexes are
Towards Structural-Functional Mimics of Acetylene Hydratase: Reversible Activation of Acetylene using a Biomimetic Tungsten Complex
Peschel, Lydia M.,Belaj, Ferdinand,M?sch-Zanetti, Nadia C.
, p. 13018 - 13021 (2015)
The synthesis and characterization of a biomimetic system that can reversibly bind acetylene (ethyne) is reported. The system has been designed to mimic catalytic intermediates of the tungstoenzyme acetylene hydratase. The thiophenyloxazoline ligand S-Pho
Glutathione peroxidase (GPx)-like antioxidant activity of the organoselenium drug ebselen: Unexpected complications with thiol exchange reactions
Sarma, Bani Kanta,Mugesh
, p. 11477 - 11485 (2005)
The factors that are responsible for the relatively low glutathione peroxidase (GPx)-like antioxidant activity of organoselenium compounds such as ebselen (1, 2-phenyl-1,2-benzisoselenazol-3(2H)-one) in the reduction of hydroperoxides with aromatic thiols
Activation and Photoinduced Release of Alkynes on a Biomimetic Tungsten Center: The Photochemical Behavior of the W?S-Phoz System
Peschel, Lydia M.,Vidovi?, Carina,Belaj, Ferdinand,Neshchadin, Dmytro,M?sch-Zanetti, Nadia C.
, p. 3893 - 3902 (2019/02/26)
The synthesis and structural determination of four tungsten alkyne complexes coordinated by the bio-inspired S,N-donor ligand 2-(4′,4′-dimethyloxazoline-2′-yl)thiophenolate (S-Phoz) is presented. A previously established protocol that involved the reaction of the respective alkyne with the bis-carbonyl precursor [W(CO)2(S-Phoz)2] was used for the complexes [W(CO)(C2R2)(S-Phoz)2] (R=H, 1 a; Me, 1 b; Ph, 1 c). Oxidation with pyridine-N-oxide gave the corresponding W-oxo species [WO(C2R2)(S-Phoz)2] (R=H, 2 a; Me, 2 b; Ph, 2 c). All W-oxo-alkyne complexes (2 a, b, c) were found to be capable of alkyne release upon light irradiation to afford five-coordinate [WO(S-Phoz)2] (3). The photoinduced release of the alkyne ligand was studied in detail by in situ 1H NMR measurements, which revealed correlation of the photodissociation rate constant (2 b>2 a>2 c) with the elongation of the alkyne C≡C bond in the molecular structures. Oxidation of [WO(S-Phoz)2] (3) with pyridine-N-oxide yielded [WO2(S-Phoz)2] (4), which shows highly fluxional behavior in solution. Variable-temperature 1H NMR spectroscopy revealed three isomeric forms with respect to the ligand arrangement versus each other. Furthermore, compound 4 rearranges to tetranuclear oxo compound [W4O4(μ-O)6(S-Phoz)4] (5) and dinuclear [{WO(μ-O)(S-Phoz)}2] (6) over time. The latter two were identified by single-crystal X-ray diffraction analyses.
