Zobrazeno 1 - 10
of 18
pro vyhledávání: '"Vera Münchow"'
Autor:
Vera Münchow, Ralf Steudel
Publikováno v:
European Journal of Inorganic Chemistry. 2004:718-725
Two novel Cp2Ti(Cl)S3R′S3Tr complexes have been prepared by reaction of the six-membered metallacycles Cp2TiS4R′ (Cp = η5-C5H5, R′ = CMe2, 1,1-C6H10) with the sulfenyl chloride TrSCl (Tr = CPh3) at 20 °C. These complexes were treated with: (a
Publikováno v:
Macromolecular Chemistry and Physics. 203:1211-1227
Two distinct types of host polymers, [EDTA]3-[PEG400]7 and [EDTA][PEG400]2, consisting of polyether chains linked together by ethylenediaminetetraacetic acid (EDTA) chelating units, were synthesized from EDTA acetate esters and poly(ethylene glycol)
Publikováno v:
Solid State Ionics. 147:397-402
Two distinct types of host polymers, [EDTA] 3 [PEG400] 7 and [EDTA][PEG400] 2 , consisting of polyethereal chains linked together by EDTA chelating units, were synthesized from ethylenediaminetetraacetic acid (EDTA) derivatives and PEG400. Their stru
Publikováno v:
European Journal of Inorganic Chemistry. 2000:921-928
The preparation of seven novel organic polysulfanes is reported. Bis(n-octyl)heptasulfane R2S71 is formed upon reaction of RSCl with [Cp2TiS5], while the corresponding nonasulfane R2S92 is obtained by reaction of RSSCl with [Cp2TiS5]. The bis(n-octyl
Publikováno v:
Electrochimica Acta. 45:1211-1221
Two new poly[(oligoethylene glycol) dihydroxytitanate] electrolytic systems were prepared by a polycondensation reaction between: Ti(OEt) 4 and polyethylene glycol 400 (PEG 400) (I), and Ti(OEt) 4 and PEG 400/LiCl complex (II). The polymers thus obta
Publikováno v:
Chemische Berichte. 130:757-764
Treatment of Cp2Ti(CO)2 (3) with the di- and polysulfanes 1,2,4-(CH2)2S3, C4S6 (9), C,7H10S3 (11), 1,2,4,6-(CH2)3S4 (16), C6H10S6(19), and S6 affords the titanocene chelate complexes Cp2TiS3(CH2)2 (8), (Cp2Ti)2C4S6 (10), Cp2TiS3C7H10 (13), Cp2TiS2C7H
Publikováno v:
Zeitschrift f�r anorganische und allgemeine Chemie. 622:1594-1600
By reaction of (C5H5)2Ti(μ-S2)2C6H103 with S2Cl2 7,8,9,10,11,12-hexathiaspiro-[5.6]dodecane 4 is prepared (yield 51%) and characterized by UV, IR, Raman, mass, and NMR spectra (1H, 13C). The seven-membered CS6 ring undergoes pseudorotation in soluti
Publikováno v:
Zeitschrift f�r anorganische und allgemeine Chemie. 621:1513-1516
The molecular structure of Ph3CSSC(S)SCPh3 · CS2 has been determined by X-ray structural analysis. The substance crystallizes in the triclinic crystal system [a = 884.9(2) pm, b = 1 039.5(2) pm, c = 2 064.6(3) pm, α = 75.86(1)°, β = 79.83(2)°,
Autor:
Vera Münchow, Ralf Steudel
Publikováno v:
Zeitschrift f�r anorganische und allgemeine Chemie. 620:121-126
Aqueous dithionite decomposes at 20°C and pH values not far from 7.0 to give thiosulfate and sulfite from which trithionate may form. Addition of thiosulfate accelerates this reaction only at pH < 6. The pH dependence is explained by formation of HS
Autor:
Ralf Steudel, Vera Münchow
Publikováno v:
Journal of Chromatography A. 623:174-177
Dithionite (S2O2−4) and hydroxymethanesulphinate (HOCH2SO−2) were separated from other sulphur oxyanions by ion-pair chromatography and determined using a UV absorbance detector. To circumvent the autoxidation of dithionite it was derivatized by