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  • 1970-1974  (1)
  • 1970  (1)
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  • 1970-1974  (1)
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  • 1
    ISSN: 0044-2313
    Keywords: Chemistry ; Inorganic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: Complexes R2SnL (R = CH3, C6H5; L2- = tridentate ONO and SNO ligands) are synthesized, and their configuration is investigated by vibrational, PMR and electronic spectroscopy.The ligands H2L are: 2-pentanone-4-(2-benzothiazolinyl), (prepared for the first time); 3-(o-hydroxyphenylamino)crotonophenone; 2-(o-hydroxyphenyl)benzothiazoline; 2,2′methylidynenitrilo diphenol. Their configuration at the solid state is discussed. The ligands seem to coordinate the tin (IV) atoms as planar tridentates, in the dianion Schiff base form.The R2SnIV moieties very probably assume a bent configuration in R2SnL. Hypotheses on the structure of R2SnL are then advanced: the possible occurrence of a quasi trigonal bipyramidal geometry, where the two carbon (R) atoms and the azomethine nitrogen atom are allocated in the trigonal plane and the O, O or S, O ligand atoms lie in axial position, is discussed.
    Notes: Komplexverbindungen vom Typ R2SnL (R = CH3, C6H5; L ist ein dreizähniger ONO- oder SNO-Ligand) werden dargestellt und ihre IR-, KMR- und elektronischen Spektren untersucht, um die Strukturen zu klären.Als Liganden (LH2) werden benutzt: 4-(2-Benzothiazolinyl)-pentan-2-on, (hier zum ersten Mal dargestellt); 3-(o-Hydroxyphenylamino)crotonophenon; 2-(o-Hydroxyphenyl)-benzothiazolin; und N-o-Hydroxybenzyliden-o′-hydroxyanilin.Im festem Zustand umgeben die organischen Liganden L2- das Zinn(IV)-Atom als ebene dreizähnige Liganden. Die R2SnIV-Reste sind wahrscheinlich nicht linear. Eine mögliche Anordnung der Liganden ist eine trigonale Bipyramide, in der die zwei R-Reste und das Stickstoffatom in der trigonalen Ebene und die zwei Sauerstoffatome bzw. das Sauerstoff- und das Schwefelatom in den zwei anderen Positionen auf beiden Seiten der Ebene liegen.
    Additional Material: 1 Ill.
    Type of Medium: Electronic Resource
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