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  • 1
    Electronic Resource
    Electronic Resource
    Preparation and Characterization of Dodecaphenylcyclohexasilane (1961)
    s.l. : American Chemical Society
    Journal of the American Chemical Society 83 (1961), S. 4089-4093 
    Details
    ISSN: 1520-5126
    Source: ACS Legacy Archives
    Topics: Chemistry and Pharmacology
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1021/ja01480a032
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  • 2
    Electronic Resource
    Electronic Resource
    Preparation and Characterization of Octaphenylcyclotetrasilane (1961)
    s.l. : American Chemical Society
    Journal of the American Chemical Society 83 (1961), S. 1921-1924 
    Details
    ISSN: 1520-5126
    Source: ACS Legacy Archives
    Topics: Chemistry and Pharmacology
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1021/ja01469a034
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  • 3
    Electronic Resource
    Electronic Resource
    Siloxanes and Silanols Derived from Perphenylated Polysilanes (1962)
    s.l. : American Chemical Society
    The @journal of organic chemistry 27 (1962), S. 614-616 
    Details
    ISSN: 1520-6904
    Source: ACS Legacy Archives
    Topics: Chemistry and Pharmacology
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1021/jo01049a065
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  • 4
    Electronic Resource
    Electronic Resource
    Chemical alkylation of lead (1975)
    [s.l.] : Nature Publishing Group
    Nature 255 (1975), S. 217-218 
    Details
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] Two basic systems were studied. A 'sulphide' system comprising sodium sulphide (hydrated 15 mg) in distilled water (200 ml) and a 'sediment' system comprising an anaerobic lake sediment (50 ml) a nutrient broth (CM1) (1 g) and glucose (0.2 g) made up to 200 ml with distilled water. All of the ...
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1038/255217a0
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  • 5
    Electronic Resource
    Electronic Resource
    The effects of organolead compounds on a freshwater and a marine alga (1987)
    New York, NY [u.a.] : Wiley-Blackwell
    Applied Organometallic Chemistry 1 (1987), S. 29-38 
    Details
    ISSN: 0268-2605
    Keywords: Algae ; alkyllead compounds ; toxicity ; alkyl chain length ; Chemistry ; Organic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Notes: There are conflicting reports concerning the toxicity of tetraalkyllead (TAL) compounds to algae. A number of groups have found the TAL's to be comparable in toxicity with the trialkyllead compounds (R3Pb+), whereas in a recent report it is suggested that the TAL's themselves are completely non-toxic and any apparent toxicity is due to R3Pb+ breakdown products.With the object of identifying the toxic agent, the effect of Et4Pb (TEL) on two algal species was re-examined. Analyses were carried out during the course of the incubations to establish the nature and concentrations of organoleads present in both media and algae, and hence evaluate their relative contributions to total toxicity.Algae were also cultured in the presence of Me4Pb (TML), Me3PbCl, Et3PbCl, Bu3PbCl and Et2PbCl2 to assess relationships between alkyl chain length and degree of substitution around the lead on algal activity. Additions of selenide and sulphide were made to the Et3Pb+ and Et2Pb2+ systems to see if these environmentally abundant species reduced or enhanced organolead toxicity. Problems were encountered in the analysis of the heterogeneous TEL containing media. Regardless of the analytical problems, the results confirm the previous findings that TAL's are non-toxic to algae and it is the R3Pb+ breakdown products which are responsible for the apparent toxicity of the TAL's. The trialkylleads were the most toxic of the several alkyllead species studied, and within the trialkyl series toxicity increased with alkyl chain length. Neither selenide or sulphide had any significant ameliorative effect on alkyllead toxicity. It was found that the ionic organoleads were complexed on the TAL's and this complexing led to a number of unexpected results.
    Additional Material: 6 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/aoc.590010106
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  • 6
    Electronic Resource
    Electronic Resource
    The toxicity of alkyllead compounds to Scrobicularia plana (Da Costa) (1988)
    New York, NY [u.a.] : Wiley-Blackwell
    Applied Organometallic Chemistry 2 (1988), S. 143-149 
    Details
    ISSN: 0268-2605
    Keywords: Scrobicularia ; alkyllead compounds ; toxicity ; inhalent siphon ; bivalves ; Chemistry ; Organic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Notes: Conventional (whole animal) toxicity tests were made with Scrobicularia plana (Da Costa), an infaunal estuarine bivalve, and compared with the responses recorded from siphonal preparations. Exposure of Scrobicularia to low concentrations of triethyllead chloride and trimethyllead chloride, for 35 and 60 days respectively, produced typical response curves. However, mortality had not become asymptotic with time at lower concentrations, suggesting further mortality with increased exposure time. An approximate incipient lethal concentration was predicted.A siphonal preparation technique with isolated and in-situ inhalent siphons of Scrobicularia was used to estimate the lowest effect concentrations of alkyllead compounds. Response to alkyllead was indicated by contraction of the siphon, recorded via an isotonic transducer. Trialkyllead compounds were more toxic than the respective dialkylleads and inorganic lead. Toxicity of trialklleads and inorganic lead. Toxicity of trialkylleads increased with alkyl chain length. Pure tetraethyllead did not cause any siphonal contraction even when applied directly to the preparation. It was concluded that tetraethyllead has a low toxicity or is non-toxic in pure form.
    Additional Material: 7 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/aoc.590020208
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  • 7
    Electronic Resource
    Electronic Resource
    Silicon Chemistry J Y Corey, E R Corey and P P Gaspar (eds) Ellis Horwood 1988 £60. ISBN 0 745 80528 0 (1988)
    New York, NY [u.a.] : Wiley-Blackwell
    Applied Organometallic Chemistry 2 (1988), S. 483-483 
    Details
    ISSN: 0268-2605
    Keywords: Chemistry ; Organic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/aoc.590020514
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  • 8
    Electronic Resource
    Electronic Resource
    The chemistry of organic silicon compounds, S Patai (general ed), Updates on the Silicon-Heteroatom Bond, D A Armitage (ed) Wiley, Chichester, 1991, 540 pages, £90. ISBN 0 471 92904 2 (1993)
    New York, NY [u.a.] : Wiley-Blackwell
    Applied Organometallic Chemistry 7 (1993), S. 76-76 
    Details
    ISSN: 0268-2605
    Keywords: Chemistry ; Organic Chemistry
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/aoc.590070112
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  • 9
    Electronic Resource
    Electronic Resource
    Reactions of some organic peroxides with triphenylphosphine and sodium dialkyl phosphites (1971)
    New York : Wiley-Blackwell
    Journal of Polymer Science Part A-1: Polymer Chemistry 9 (1971), S. 3105-3114 
    Details
    ISSN: 0449-296X
    Keywords: Physics ; Polymer and Materials Science
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology
    Notes: The reactions of the allylic peroxides ascaridole, cyclohexadiene endoperoxide, and α-phellandrene peroxide with triphenylphosphine follow an SNi'-type mechanism. In contrast, the acyclic allylic compounds, allyl tert-butyl peroxide, α-cumyl cyclohexenyl peroxide, and tert-butyl cyclohexenyl peroxide apparently react with triphenylphosphine by a free-radical mechanism. The saturated cyclic peroxide dihydroascaridole, in which there is no possibility of an allylic rearrangement, gives with triphenylphosphine a mixture of olefinic alcohols. Di-n-butyl peroxide is readily cleaved by sodium dialkyl phosphites, but sterically hindered peroxides do not react under similar conditions. Reaction can, however, take place at the oxygen adjacent to a large group if a smaller substituent is present on the other oxygen atom.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/pol.1971.150091102
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