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  • 1
    ISSN: 0044-2313
    Keywords: Titanium, Vanadium Complexes ; 2,2′-Dihydroxyazobenzene ; Mass Spectra ; Crystal Structure ; Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: Complexes of Vanadium and Titanium with 2,2′-Dihydroxyazobenzene. Crystal Structure of 2,2′-Dihydroxybenzenato(2-)-oxo-methoxo-methanol-vanadium(V) and μ-Oxo-bis[2,2′-dihydroxyazobenzenato(2-)-oxo-vanadium(V)]By the reaction of 2,2-dihydroxyazobenzene with titanium(IV) the expected compound bis [2,2′-dihydroxybenzenato(2-)-titanium(IV)] was obtained. On the other hand in the dependence on the experimental conditions vanadium forms further compounds beside the bisligand complex. They were characterized by mass spectrometry resp. X-ray structural analysis. Crystallographic data see „Inhaltsübersicht“.
    Notes: Bei der Reaktion von 2,2′-Dihydroxyazobenzen mit Titan(IV)-isopropoxid wird erwartungsgemäß Bis[2,2′-dihydroxyazobenzenato(2-)]-titan(IV) erhalten. Vanadium bildet dagegen in Abhängigkeit von den Versuchsbedingungen neben dem Bis-Ligand-Komplex weitere Verbindungen, die massenspektrometrisch bzw. durch Röntgenkristallstrukturanalyse charakterisiert wurden.2,2′-Dihydroxyazobenzenato(2-)-oxo-methoxo-methanol-vanadium(V) Raumgruppe P21/c Z = 4, 1 561 beobachtete unabhängige Reflexe, R = 3,9%. Gitterabmessungen bei 25°C: a = 1 037,6(3) pm; b = 929,6(4) pm; c = 1 637,1(4) pm, μ = 99,66(3)°; μ-Oxo-bis[2,2′-dihydroxyazobenzenato(2-)-oxo-vanadium(V)]. Raumgruppe Pbcn, Z = 4, 1 489 beobachtete unabhängige Reflexe, R = 4,3%. Gitterabmessungen bei 25°C: a = 739,2(1) pm; b = 2 429,2(2) pm, c = 1 287,4(6) pm.
    Additional Material: 4 Ill.
    Type of Medium: Electronic Resource
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  • 2
    ISSN: 0044-2313
    Keywords: Tin(IV) Complexes ; Azomethines ; 119 Sn-NMR ; Mössbauer Spectra ; Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: Tin(IV) Complexes with Tridentate Diacidic Ligands  -  119Sn NMR and 119mSn Mössbauer StudiesThe tin(IV) chelates of tridentate diacidic azomethines of acetylacetone resp. salicylaldehyde with benzoylhydrazine, thiobenzoylhydrazine, 2-hydroxyaniline and 2-mercaptoaniline as well as with the ligands 2-(2′-hydroxy-4-methylphenyl)-6-(2″-hydroxyphenyl)pyridine, 2-(2′-hydroxyphenyl)-8-quinolinol and 2.6-diphenacylpyridine were synthesized. The compounds were characterized by IR-, UV/VIS-, MS-, 119Sn NMR and 119mSn Mössbauer spectroscopy. They exist as a mixture of geometrical isomers.
    Notes: Es wurden die Zinn(IV)-Chelate der dreizähnigen diaciden Azomethine aus Acetylaceton bzw. Salicylaldehyd mit Benzoylhydrazin, Thiobenzoylhydrazin, 2-Hydroxyanilin und 2-Mercaptoanilin sowie mit den Liganden 2-(2′-Hydroxy-4-methylphenyl)-6-(2″-hydroxyphenyl)pyridin, 2-(2′-Hydroxyphenyl)-chinolin-8-ol und 2,6-Diphenacylpyridin dargestellt. Die Charakterisierung der Verbindungen erfolgte durch IR-, UV/VIS-, MS-, 119Sn-NMR und 119mSn-Mössbauer-Spektroskopie. Die Substanzen liegen als Gemisch geometrischer Isomerer vor.
    Additional Material: 4 Ill.
    Type of Medium: Electronic Resource
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