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  • 1
    ISSN: 1434-4475
    Keywords: Keywords. Hypervalency; Tin compounds; X-Ray structure analysis.
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology
    Description / Table of Contents: Zusammenfassung.  Es wurden neue Organozinnderivate ArNSn(X)RR′ (ArN=2-Me2NCH2C6H4; X=Cl, H, OMe; R,R′=Me, Ph) sowie ArNSnCl2Ph und (ArN)4Sn synthetisiert und hinsichtlich intramolekularer Sn*N-Wechselwirkungen untersucht. Die Bildung der Methoxyderivate ArNSn(OMe)RR′ durch Reaktion von ArNSn(H)RR′ mit Methanol wird mit zunehmender Substitution von Methyl- durch Phenylgruppen schwieriger. Die Molekülstrukturen von ArNSnClMe2, ArNSnCl2Ph und (ArN)4Sn wurden durch Röntgenbeugung bestimmt. ArNSnClMe2 und ArNSnCl2Ph sind trigonal-bipyramidal gebaut, wobei die Sn*N-Wechselwirkung bei ArNSnClMe2 stärker ist als bei ArNSnCl2Ph. Bei (ArN)4Sn findet man in Kristall zwei kristallographisch unterschiedliche Moleküle mit schwachen Sn*N-Wechselwirkungen beider Aminogruppen. Sie unterscheiden sich durch die relative Position der Aminogruppen.
    Notes: Summary.  New organotin derivatives ArNSn(X)RR′ (ArN=2-Me2NCH2C6H4; X= Cl, H, OMe; R, R′=Me, Ph) as well as ArNSnCl2Ph and (ArN)4Sn were prepared and investigated with regard to intramolecular Sn*N interaction. The formation of the methoxy derivatives ArNSn(OMe)RR′ by reaction of ArNSn(H)RR′ with methanol is rendered more difficult by successive replacement of the methyl substituents by phenyl groups. The molecular structures of ArNSnClMe2, ArNSnCl2Ph, and (ArN)4Sn were determined by X-ray diffraction. ArNSnClMe2 and ArNSnCl2Ph have a trigonal bipyramidal structure, the Sn*N interaction being stronger in ArNSnClMe2 than in ArNSnCl2Ph. There are two crystallographically different molecules in crystalline (ArN)4Sn with weak Sn*N interactions of both amino groups. They differ by the relative position of the amino groups.
    Type of Medium: Electronic Resource
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