Zobrazeno 1 - 10
of 32
pro vyhledávání: '"and Krzysztof Szczegot"'
Publikováno v:
Photochemical & Photobiological Sciences. 10:361-366
Hybrid photocatalysts based on TiO(2)-anatase matrix, representing the both micro- and nano-structures, impregnated with selected lanthanide diphthalocyanine and metalloporphyrin sensitizers, were compared to evaluate their activity and effectiveness
Publikováno v:
Dalton Transactions. 41:8846-8853
Thio(bisphenolato) complexes of the type [M2(mu-tbop-kappa3O,S,O)2Cl4] [M = Zr 1, Hf 2 and tbop = 2,2-thiobis{4-(1,1,3,3-tetramethyl-butyl)phenolate}] were prepared by HCl elimination from tbopH2 and MCl4. Substitution of the chlorides in 1 and 2 by
Publikováno v:
Catalysis Letters. 126:247-252
Oxidation of SO2 into SO3 was found effectively catalyzed by photosensitized ytterbium diphthalocyanine, YbPc2 (Pc = phthalocyanine ligand, C32H16N8) when performed in air-saturated dimethylformamide (DMF) solution at 20 °C. The process follows acco
Autor:
Krzysztof Szczegot, Lucjan B. Jerzykiewicz, Krzysztof Drabent, Zofia Janas, Dorota Wiśniewska, Piotr Sobota
Publikováno v:
Dalton Trans.. :2065-2069
The direct reaction between [VCl(3)(thf)3] or [VO(OEt)3] and 2,2'-thiobis{4-(1,1,3,3-tetramethyl-butyl)phenol (tbopH(2)) leads to the formation of [V(2)(micro-tbop-kappa(3)O,S,O)2Cl(2)(CH(3)CN)(2)] (1).4CH(3)CN or [V(2)(micro-OEt)2(O)2(tbop-kappa(3)O
Publikováno v:
Organometallics. 24:3987-3994
The tridentate (OSO-functions) biphenol, 2,2‘-thiobis{4-(1,1,3,3-tetramethylbutyl)phenol} (tbopH2), reacts with AlMe3 to give [Al2(μ-tbop-κ3O,S,O)2Me2] (1). Alcoholysis of 1 results in the formation of [Al2(μ-OEt)2(tbop-κ3O,S,O)2] (2). The reac
Autor:
Zofia Janas, Katarzyna R. Przybylak, Piotr Sobota, Krzysztof Szczegot, Dorota Wiśniewska, Lucjan B. Jerzykiewicz
Publikováno v:
European Journal of Inorganic Chemistry. 2005:1063-1070
Titanium complexes based on 2,2'-thiobis[4-(1,1,3,3-tetramethylbutyl)phenolato] (tbop) are prepared by reaction of TiCl 4 or Ti(NMe 2 ) 4 with the parent biphenol. Three new complexes are reported: [Ti 2 (μ-tbop-κ 3 O,S,O)(μ-tbop-κ 2 O,O)-(tbop-
Publikováno v:
Polimery. 49:498-504
Experimental and theoretical studies of coordination polymerization of ethylene have been performed in the presence of precursors - the complexes of Ti, Zr, Hf, V halides with organic Lewis bases, magnesium support [MgCl 2 (THF) 2 ] and organoalumini
Autor:
Krzysztof Szczegot, Lucjan B. Jerzykiewicz, Zofia Janas, Katarzyna R. Przybylak, Piotr Sobota
Publikováno v:
European Journal of Inorganic Chemistry. 8:1639-1645
The mixed-ligand complexes [Ti2(μ-OR)2(OR)2(κ3-tbop)2] (1a) for R = Me and (1b) R = Et were prepared by the reaction of Ti(OR)4 and H2tbop {H2tbop = 2,2′-thiobis[4-(1,1,3,3-tetramethylbutyl)phenol]} in methanol. Treatment of 1a and 1b with AlMe3
Autor:
Krzysztof Szczegot, Zygmunt Flisak
Publikováno v:
Journal of Molecular Catalysis A-Chemical. 206(1-2):429-434
Strength of the TiO co-ordinate bond in several titanium complexes with bidentate ligands has been investigated by means of DFT. Mutual interaction of particular donors and their influence on Lewis acidity of the central atom have also been studie
Publikováno v:
Catalysis Today. 78(1-4):345-351
Ziegler–Natta ethylene insertion into the carbon–metal bond for a number of fragments containing vanadium on different oxidation states as well as the halogen ligands has been studied by means of DFT. It is shown that the complexation and inserti