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  • 1
    Electronic Resource
    Electronic Resource
    119Sn NMR study of organotin compounds having intramolecular Sn - N coordination (1991)
    Chichester : Wiley-Blackwell
    Organic Magnetic Resonance 29 (1991), S. S25 
    Details
    ISSN: 0749-1581
    Keywords: 119Sn NMR ; Chemical shifts ; Intramolecular coordination ; Divalent organotin compounds ; Tetraorganotin compounds ; Triorganotin halides ; Diorganotin dihalides ; Chemistry ; Analytical Chemistry and Spectroscopy
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Notes: 119Sn NMR data are reported for organotin compounds containing potentially C,N-chelating ligands capable of forming five- or six-membered chelate rings. The 119Sn chemical shifts of divalent organotin compounds containing such a ligand are found at relatively high frequency. Intramolecular coordination in tetraorganotin compounds has little influence on their 119Sn chemical shifts. However, additional coordination in tri- and di-organotin halides causes a large shift to lower frequency of about 100 ppm. Finally, for organotin compounds which exist as a diastereoisomeric mixture in solution, two well resolved 119Sn resonances are observed.
    Additional Material: 7 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/mrc.1260291308
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  • 2
    Electronic Resource
    Electronic Resource
    New Pt … H—N bonds characterized by 15N-filtered and 2D NOESY 1H NMR spectroscopy (1992)
    Chichester : Wiley-Blackwell
    Organic Magnetic Resonance 30 (1992), S. 548-551 
    Details
    ISSN: 0749-1581
    Keywords: NOESY ; 15N-filtered ; Pt-amine complexes ; Cyclometallation ; Pt … H—N interactions ; Chemistry ; Analytical Chemistry and Spectroscopy
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Notes: New Pt … H—N bonding modes in two cycloplatinated complexes, [Pt(C6H4CH2NMe2-2-C,N)(C6H4CH2NMe2H-2-C,H)Br] (1) and [Pt(1-C10H6NMe2-8-C,N)(1-C10H6NMe2H-8-C,H)Br] (2), were characterized by 15N-filtered and 2D NOESY 1H measurements. Both 1 and 2 show markedly different interactions of an RNMe2H+ group with a platinum centre; the 1J(15N,1H) values of 69 and 59 Hz for 1 and 2, respectively, are considerably less than those of the related free and protonated organic amine systems. The corresponding 1J(195Pt,1H) values are 72 and 180 Hz, respectively. An approach both to understanding and recognizing these Pt … H—N interactions is presented.
    Additional Material: 2 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/mrc.1260300616
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    Paper (German National Licenses)
    Fulltext
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