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  • 1
    Electronic Resource
    Electronic Resource
    Crystal and molecular structures of tri(o-tolyl)phosphinegold(I) purine-6-thiolate ethanol solvate (1/1) and tri(c-hexyl)phosphinegold(I) 6-methyl-2-thiouracilate (1994)
    Springer
    Journal of chemical crystallography 24 (1994), S. 805-810 
    Details
    ISSN: 1572-8854
    Keywords: Structures ; Au atom ; Thiolate ligands
    Source: Springer Online Journal Archives 1860-2000
    Topics: Geosciences , Physics
    Notes: Abstract The crystal and molecular structures of the title compounds, [(o-tol)3PAu(6-MP)]·EtOH and [(c-hexyl)3PAu(6-Me-2-TU)], have been determined and each show the presence of a linear geometry about the Au atom; both of the thionucleobases function as thiolate ligands. Important interatomic parameters for [(o-tol)3PAu(6-MP)] are Au−S 2.266(2), Au−P 2.239(2) Å and S−Au−P 177.03(8)° and for [(c-hexyl)3PAu(6-Me-2-TU)]: Au−S 2.299(3), Au−P 2.244(3) Å and S−Au−P 176.1(1)°. Crystals of [(o-tol)3PAu(6-MP)]·EtOH are monoclinic with space groupP21/n, and unit cell dimensionsa=10.067(2),b=10.518(2),c=25.416(4) Å, β=98.42(2)°,Z=4. The structure was refined to finalR=0.040 for 4183 data withI≥3.0σ(I). Crystals of [(c-hexyl)3PAu(6-Me-2-TU)] are monoclinic with space groupP21/c, and unit cell dimensionsa=9.692(4),b=15.822(4),c=15.775(3) Å, β=94.00(2)°,Z=4,R=0.033 for 2666 data.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01668245
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  • 2
    Electronic Resource
    Electronic Resource
    Crystal and molecular structure ofo-aminobenzoato (o-(p-dimethylaminobenzalidine)benzoato)(o-ammoniobenzoate)dimethyltin(IV), an example of a mixed carboxylate complex of tin (1996)
    Springer
    Journal of chemical crystallography 26 (1996), S. 393-397 
    Details
    ISSN: 1572-8854
    Keywords: X-ray diffraction studies ; organotin ; carboxylate ; adduct
    Source: Springer Online Journal Archives 1860-2000
    Topics: Geosciences , Physics
    Notes: Abstract The structure of the title compound, [Me2Sn(O2CC6H4NH2-o)(O2CC6H4(N=C(H)C6H4NMe2-p)-o)(−O2CC6H4NH3-o)], has been determined at room temperature. The structure features a distorted trigonal bipyramidal coordination geometry for Sn, defined by three O atoms derived from chemically different, monodentate carboxylate ligands and two methyl groups. Crystals are monoclinic, space groupP21/n witha=14.718(5),b=10.981(4),c=20.321(3) Å, β=110.74(2)°,Z=4; refinement on 2480 reflections gaveR=0.046.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01665817
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  • 3
    Electronic Resource
    Electronic Resource
    Synthesis and characterization of diorganotin(IV) complexes of N-(2-pyridylmethylene)arylamines and mutagenicity testing in vivo of Et2SnCl2·[L4=N-(2-pyridylmethylene)-4-toluidine] (1998)
    New York, NY [u.a.] : Wiley-Blackwell
    Applied Organometallic Chemistry 12 (1998), S. 503-513 
    Details
    ISSN: 0268-2605
    Keywords: organotin ; N-(2-pyridylmethylene)arylamines ; IR ; NMR ; Mössbauer ; mutagenicity ; sister chromatid exchange ; cell cycle delay ; bone-marrow cells ; Chemistry ; Industrial Chemistry and Chemical Engineering
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Notes: Diorganotin(IV) dichloride complexes of the type R2SnCl2·L (R = methyl, ethyl, vinyl, t-butyl, n-butyl or phenyl; L = N-(2-pyridylmethylene)arylamine) have been synthesized and characterized on the basis of IR, NMR and 119Sn Mössbauer studies. Investigation of the complexes indicated that N-(2-pyridylmethylene)arylamines form distorted trans-octahedral complexes with R2SnCl2 similar to the well-known R2SnCl2·L. Cytogenetic toxicology testing has been performed for Et2SnCl2·L4 [L4 = N-(2-pyridylmethylene)-4-toluidine] in mouse bone-marrow cells in vivo since such testing is a regulatory requirement before new drugs are released. This tin compound induced delay in cell-cycle kinetics and sister chromatid exchanges (SCEs) significantly. The effect of Et2SnCl2·L4 was greater when endogenous glutathione (GSH) was depleted by buthionine sulphoximine (BSO). It seems that Et2SnCl2·L4 induces SCEs due to formation of adduct by binding on DNA which could interfere in DNA synthesis and cause delay in cell proliferation. Depletion of GSH could reduce the shielding effect of GSH on chromatin and allows more Et2SnCl2·L4 to bind on DNA. © 1998 John Wiley & Sons, Ltd.
    Additional Material: 1 Ill.
    Type of Medium: Electronic Resource
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  • 4
    Electronic Resource
    Electronic Resource
    Synthesis, characterization and in-vitro antitumour activity of dibutyltin carboxylates involving the perfluorophenyl moiety: Crystal structure of the dimeric bis[(4-fluoro- and pentafluoro-benzoato)di-n-butyltin] oxides (1995)
    New York, NY [u.a.] : Wiley-Blackwell
    Applied Organometallic Chemistry 9 (1995), S. 639-648 
    Details
    ISSN: 0268-2605
    Keywords: organotin ; carboxylate ; crystal structure ; distannoxane ; antitumour ; Chemistry ; Organic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Notes: Crystal structure determinations of {[(F5C6COO)Bu2Sn]2O}2 and {[(4-F-C6H4COO)-Bu2Sn]2O}2 show that the structures are similar and feature central Bu4Sn2O2 units with two Bu2Sn groups connected by bridging oxygen atoms. Each pair of exo- and endo-cyclic tin atoms is linked by an almost symmetrically bridging carboxylate group, with the two remaining groups attached to the exocyclic tin atom only. Crystals of {[(F5C6COO)Bu2Sn]2O}2 are triclinic, space group P1, with unit cell dimensions a = 12.425(3) Å, b = 13.090(5) Å, c = 11.697(3) Å, α = 95.31(3)°, β = 93.28(2)°, γ = 113.01(2)°, V = 1734(1) Å3, Z = 1. Crystals of {[(4-F-C6H4COO)Bu2Sn]2O}2, are also triclinic, space group PI, a = 12.599(6) Å, b= 25.359(4) Å, c = 11.480(4) Å, α = 91.44(3)°, β = 114.77(3)°, γ=97.43(3)°, V=3289(2) Å3, Z=2. The structures were refined to final R= 0.046, Rw = 0.046 for 4312 reflections with I≥ 3.0 σ(l) for {[(F5C6COO)Bu2Sn]2O}2 and R=0.061, Rw=0.068 for 4112 reflections with l≥3.0 σ(l for {[(4-F-C6H4COO)Bu2Sn]2O}2.
    Additional Material: 3 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/aoc.590090720
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