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  • 1
    ISSN: 0044-2313
    Keywords: Vanadium Complexes ; syntheses ; EPR spec-tra, absorption spectra ; crystal structures ; Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: Vanadium Complexes with Tridentate Diacidic Ligands. The Crystal Structures of Bis[acetylacetonato-thiobenzoylhydrazonato(2-)]vanadium(IV), Methoxo-oxo-[salicylaldehyd-thiobenzoylhydrazonato(2-)]vanadium(V), and Methoxo-oxo-[salicylaldehydbenzoylhydrazonato(2-)]methanol Vanadium(V)By template reactions of bis(acetylacetonato)oxovanadium(IV) and bis(salicylaldehydato)oxo-vanadium(IV), respectively, with benzoylhydrazine, thiobenzoylhydrazine, and 2-aminophenol the vanadium(IV) complexes V(LLL)2 of tridentate azomethine ligands LLL were synthesized. The complexes were characterized by EPR spectroscopy and by absorption spectroscopy. From the complex V(LLL)2 (1), in which LLL is acetyl-aceton-thiobenzoydrazonate(2-), the crystal structure analysis was solved. The vanadium atom in 1 is coordinated trigonal-prismatically by two N, 0 and S atoms. Furthermore, the 0x0 vanadium(V) complexes[VO(LLL)(OCH,)] (6) with LLL = salicylaldehyd-thio-benzoylhydrazonato(2-) and [VO(LLL)(OCH3)· -CH3OH] (7) with LLL = salicylaldehydbenzoylhydrazonato(2-) were identified by X-ray diffraction and by IR spectroscopy in the reaction products.Crystallographic data for 1, 6, and 7 see „Inhaltsübersicht“.
    Notes: Durch template-Reaktionen von Bis(acetylacetonato)-oxovanadium(IV) bzw. Bis(salicylaldehydato)-oxovanadium(IV) mit Benzoylhydrazin, Thiobenzoylhydrazin und 2-Aminophenol wurden die Vanadium(IV)-komplexe V(LLL)2 mit den dreizähnigen diaciden Azomethinliganden LLL synthetisiert. Die Komplexe werden durch ihre EPR-Spektren und durch die Absorptionsspektren charakterisiert; von dem Komplex V(LLL)2 (1) mit LLL = acetylaceton-thiobenzoylhydrazonato(2-) wurde eine Kristallstrukturanalyse angefertigt. Danach ist das Vanadiumatom trigonal-prismatisch von je zwei S-, O- und N-Atomen des Liganden LLL umgeben. In den Reaktionsprodukten wurden daneben röntgenstrukturanalytisch und IR-spektroskopisch die Oxovanadium(V)-komplexe [VO(LLL)(OCH3)] (6) mit LLL = salicylaldehyd-thiobenzoylhydrazonato(2-) und [VO(LLL)(OCH3)] · CH3OH (7) mit LLL = salicylaldehydbenzoylhydrazonato(2-) identifiziert.1: Raumgruppe P21/c, Z = 4, 1205 beobachtete unabhängige Reflexe, R = 4,8%. Gitterabmessungen bei 20°C: a = 923,1(2); b = 1156,2(2); c = 2341,3(5) pm; β = 101,30(3).6: Raumgruppe P21/n, Z = 4, 1872 beobachtete unabhängige Reflexe, R = 4,4%. Gitterabmessungen bei 20°C: a = 742,2(1); b = 1148,0(1); c = 1787,8(2) pm, β = 96,48(1)°. Das Vanadiumatom in 6 ist verzerrt tetragonal-pyramidal koordiniert mit dem Oxoliganden in Apical-Position.7: Raumgruppe P21/c, Z = 4, 992 beobachtete unabhängige Reflexe, R = 5,9%. Gitterabmessungen bei 20°C: a = 816,6(2); b = 1698,6(3), c = 1224,1(2) pm; β = 104,20(3)°. Das Vanadiumatom in 7 ist verzerrt oktaedrisch koordiniert mit dem O-Atom des Methanol-Moleküls in trans-Stellung zum Oxoliganden.
    Additional Material: 5 Ill.
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  • 2
    Electronic Resource
    Electronic Resource
    Weinheim : Wiley-Blackwell
    Zeitschrift für anorganische Chemie 607 (1992), S. 177-182 
    ISSN: 0044-2313
    Keywords: Tin(IV) complexes ; syntheses ; IR-UV-VIS ; Mössbauer spectra ; crystal structures ; Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: Tin(IV) Complexes with Tridentate Diacidic LigandsBy template reactions including bis(acetylacetonato)-dichloro-tin(IV) and O-aminophenol as well as o-aminothiophenol, benzoylhydrazine, and thiobenzoylhydrazine the tin chelates of tridentate diacidic ligands containing ligator atoms were prepared. To characterize the compound, IR, UV-VIS and Mössbauer spectroscopy were used. Crystal structure analyses demonstrate the existence of disturbed octahedral structures.Bis[acetylacetonbenzoylhydrazonato(2-)]tin(IV): space group P21/c, Z = 4, 2501 observed unique reflections, R = 0.045. Lattice dimensions at 20°C: a = 992.3, b = 2405.5, c = 1071.8pm, β = 116.94°.Bis[acetylacetonthiobenzoylhydrazonato(2-)] tin(IV): space group P21/c, Z = 4, 3603 observed unique reflections, R= 0.029. Lattice dimensions at 20°C: a = 1581.5, b = 947.8, c = 1644.9pm, β = 90.32°.
    Notes: Durch Template-Reaktionen von Bis(acetylacetonato)-dichloro-zinn(IV) mit o-Aminophenol, o-Aminothiophenol, Benzoylhydrazin und Thiobenzoylhydrazin wurden die Zinnchelate dreizähniger diacider Liganden mit- Ligatoratomen dargestellt. Die Charakterisierung der Substanzen erfolgte durch IR-, UV-VIS-und Mößbauer-Spektroskopie. Die Röntgenkristallstrukturanalysen erweisen das Vorliegen verzerrt-oktaedrischer Strukturen.Bis[acetylacetonthiobenzoylhydrazonato(2-)] zinn(IV): Raumgruppe P21/c, Z = 4, 2501 beobachtete unabhängige Reflexe, R = 4,5%. Gitterabmessungen bei 20°C: a = 992, 3; b = 2405,5; c = 1071, 8pm, β=116,94°.Bis[acetylacetonbenzoylhydrazonato(2-)] zinn(IV): Raumgruppe P21/c, Z = 4, 3603 beobachtete unabhängige Reflexe, R = 2,9%. Gitterabmessungen bei 20°C: a = 1581, 5; b = 947,8; c = 1644,9pm, β=90,32°.
    Additional Material: 3 Ill.
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