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  • 1
    Electronic Resource
    Electronic Resource
    Trimethylstannyl 2-furancarboxylate (1989)
    Oxford [u.a.] : International Union of Crystallography (IUCr)
    Acta crystallographica 45 (1989), S. 1810-1811 
    Details
    ISSN: 1600-5759
    Source: Crystallography Journals Online : IUCR Backfile Archive 1948-2001
    Topics: Chemistry and Pharmacology , Geosciences , Physics
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1107/S0108270189007559
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    Paper (German National Licenses)
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  • 2
    Electronic Resource
    Electronic Resource
    Organotin(IV) derivatives of mercaptosuccinic and thiodiacetic acids (1993)
    New York, NY [u.a.] : Wiley-Blackwell
    Applied Organometallic Chemistry 7 (1993), S. 33-38 
    Details
    ISSN: 0268-2605
    Keywords: Organotin(IV) ; mercaptosuccinic acid ; thiodiacetic acid ; complexes ; structures ; Sn—S bonding ; Chemistry ; Organic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Notes: Di- and tri-organotin(IV) complexes of general formula R2SnAH, (R3Sn)2AH, R2SnB, (R3Sn)2B (A=dianion of mercaptosuccinic acid; B=dianion of thiodiacetic acid; R=Me, Et, nPr, nBu, nOct in R2Sn and nBu in R3Sn) have been synthesized and characterized by elemental analysis, IR and 1H and 13C NMR spectroscopy. These data support the preferential binding of sulphur over carboxylate by tin(IV) in R2SnAH and (R3Sn)2AH. R2SnAH complexes are assigned pentacoordinated bridged polymeric trigonal bipyramidal geometry whereas (R3Sn)2AH complexes are monomeric with trigonal bipyramidal geometry at tin arising from a bidentate carboxylate group at one tin atom and from weak bonding via Sn←O=C at the other tin atom. In R2SnB and (R3Sn)2B, tin(IV) binds to two carboxylate groups in a unidentate and a bidentate manner respectively, resulting in tetracoordinated and pentacoordinated structures. Potential uses of these compounds are discussed.
    Additional Material: 4 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/aoc.590070103
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  • 3
    Electronic Resource
    Electronic Resource
    Preparation and characterization of diphenyllead(IV) and triphenyllead(IV) complexes with N-protected amino-acids and the dipeptides (1990)
    New York, NY [u.a.] : Wiley-Blackwell
    Applied Organometallic Chemistry 4 (1990), S. 345-352 
    Details
    ISSN: 0268-2605
    Keywords: Organolead(IV) ; N-protected aminoacids ; dipeptides ; structures ; complexes ; Chemistry ; Organic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Notes: The diphenyllead(IV) derivatives of N-benzoyl-(glycine, DL-alanine); N-formyl and N-acetyl-L-phenylalanine; N-monochloroacetyl-L-phenylalanine; N-benzoyl-(glycylglycine, DL-alanylglycine), and N-formyl- N-acetyl- and N-monochloroacetyl-(L-phenylalanylglycine) have been prepared in 1:2 molar ratio by reaction of diphenyllead dichloride with the appropriate amino-acid or dipeptide. Corresponding triphenyllead(IV) derivatives have been prepared in 1:1 molar ratio by reaction of triphenyllead chloride with the thallium(I) salts of the amino-acid or the dipeptide. These complexes have been characterized by elemental analysis, IR and 1H NMR spectral studies. A polymeric hexacoordinated octahedral structure for diphenyllead(IV), and a five-coordinated distorted trigonalbipyramidal chain-type structure for triphenyllead(IV), complexes is confirmed by IR spectra. The carboxylate group acts in a bidentate manner, not as in diorgano and triorganotin(IV) complexes with these acids, where it is monodentate. The available bonding sites such as amide and peptide carbonyl (CO) and amide and peptide nitrogen atoms are not involved in bonding with lead (IV) and thus are available for bonding with the biological systems. The presence of different N-protecting groups does not affect the coordination sites around lead(IV). The triphenyllead(IV) compounds are relatively more stable than the diphenyllead(IV) compounds.
    Additional Material: 4 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/aoc.590040407
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  • 4
    Electronic Resource
    Electronic Resource
    Synthesis of Macrocyclic Compounds Using Diorganotin(IV) Dicarboxylates as Covalent Templates (1996)
    New York, NY [u.a.] : Wiley-Blackwell
    Applied Organometallic Chemistry 10 (1996), S. 363-367 
    Details
    ISSN: 0268-2605
    Keywords: diorganotin(IV) ; covalent templates ; macrocyclic ; acid anhydrides ; Chemistry ; Industrial Chemistry and Chemical Engineering
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Notes: A series of new macrocyclic compounds have been prepared by treating di-n-butyltin(IV) dicarboxylates of diphenic acid (biphenyl-2,2′-dicarboxylic acid), thiodiacetic acid and maleic anhydride with succinyl, adipoyl and sebacoyl dichlorides. The compounds have been characterized with the help of elemental analyses and spectral data (mass, IR, IH and 13C NMR).
    Additional Material: 2 Ill.
    Type of Medium: Electronic Resource
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    Paper (German National Licenses)
  • 5
    Electronic Resource
    Electronic Resource
    Diorganotin(IV) and triorganotin(IV) derivatives of diphenic acid (1995)
    New York, NY [u.a.] : Wiley-Blackwell
    Applied Organometallic Chemistry 9 (1995), S. 121-126 
    Details
    ISSN: 0268-2605
    Keywords: diphenic acid ; organotin(IV) ; complexes ; Chemistry ; Organic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Notes: The diorganotin(IV) and triorganotin(IV) derivatives R2SnA (R = Me, n-Pr, n-Bu, n-Oct) and (R3Sn)2A [R = Me, Ph, cyclohexyl (Cyh); A = an anion of diphenic acid] have been prepared and characterized by elemental analysis, IR, 1H and 13C NMR spectroscopies. Tetrahedral tin forms a part of a diphenate cyclic ring in the diorganotin complexes with unidentate carboxylates, which have further been used for the synthesis of cyclic acid anhydrides. The soluble dinuclear triorganotin complexes (Me, Ph) possess symmetrically bonded carboxylates while the less soluble compound (Cyh3Sn)2A has two asymmetrically bonded carboxylates. All have a trigonal bipyramidal structure with R3Sn units remote from each other.
    Additional Material: 3 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/aoc.590090205
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  • 6
    Electronic Resource
    Electronic Resource
    Diorganotin(IV) complexes of indole 3-acetic acid (1993)
    New York, NY [u.a.] : Wiley-Blackwell
    Applied Organometallic Chemistry 7 (1993), S. 39-43 
    Details
    ISSN: 0268-2605
    Keywords: Diorganotin(IV) ; indole 3-acetic acid ; biocidal activity ; Chemistry ; Organic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Notes: Alkyl derivatives of indole 3-acetic acid (IAA) have been prepared and are suitable for investigating steric substituent effects on hormonal activity without major interference from electronic effects. Triorganotin(IV) derivatives of indole 3-acetic acid and N-methylindole 3-acetic acid have been reported to act as insecticidal, fungicidal and bactericidal agents. Me3SnIAA is more active as a biocide than Cy3SnIAA. The activity of these two compounds may be due to the fact that four-coordinated tin monomers or five-coordinated tin polymers are often more active than chelated five-coordinated tin species because these readily undergo hydrolysis to give R3Sn(H2O+)2 species. The ligand affects the rate of formation of the ligand-free active organotin entity. Biocidal activity is expected from diorganotin(IV) pentacoordinated complexes of indole 3-acetic acid in the present case due to (i) the activity of pentacoordinated organotin species, (ii) the presence of an - NH moiety in the complexes, which is an active site for binding. The NH moiety may be deprotonated and nitrogen may coordinate with metal ions present in the physiological systems and thus destroy the activity of enzymes.
    Additional Material: 3 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/aoc.590070104
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