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41.
The reactions of 1,4-dioxa-2-silacyclohexanes with acetyl chloride lead to the cleavage of the Si−O bond to form chlorotriorganosilanes
containing the acetoxy group in the organic radical at the silicon atom. Hydrolysis of these chlorosilanes affords bis(acetoxy-alkoxy(aryloxy)methyl)disiloxanes,
while the reactions with cage copper sodium phenylsiloxane give dodecaphenyl[dodeca(acetoxyorganodimethylsilyloxy)]cyclododecasiloxanes.
Translated fromIzvestiya Akademii Nauk. Seriya Khimicheskaya, No. 12, pp. 2527–2529, December, 1998. 相似文献
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Yu?A.?KarpovEmail author T.?A.?Makarova D.?F.?Makarov A.?P.?Kuznetsov 《Accreditation and quality assurance》2004,9(7):404-410
Problems verifying the accuracy of analyses of non-standardized materials for precious metal (PM) content have arisen at the Norilsky Nickel plant, which is a major producer of nickel, copper, and PMs in Russia. Because of the unavailability of certified reference samples for direct accuracy verification, a program of interlaboratory comparisons (ILC) was developed. This program was based on testing three semi-products of the PM production process for PM content. On program completion, a total of 826 results in 98 runs had been obtained. For each run, the calculated mean value of PM concentration was taken to be the reference value. The results obtained by Norilsky Nickel were in agreement with the reference values within the standard deviations calculated for the values. The quality of results yielded with the ILC program, as assessed via the Z-criterion, is regarded as satisfactory.Presented at the Second International Conference on Metrology – Trends and Applications in Calibration and Testing Laboratories, November 4–6, 2003, Eilat, Israel. 相似文献
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V. I. Kodolov I. N. Shabanova L. G. Makarova N. V. Khokhryakov A. P. Kuznetsov O. A. Nikolaeva J. Kerene G. I. Yakovlev 《Journal of Structural Chemistry》2001,42(2):215-219
This paper deals with X-ray photoelectron and electron microscopy studies of the structure of carbon–metal-containing micro- and nanotubulenes. Ab initio quantum-chemical calculations were performed to analyze the possibility and mechanism of tubulene formation. 相似文献
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Ella Kh. Kazakova Nelly A Makarova Aidar I. Rakhmatullin Liya A. Muslinkina Abdurachim A. Muslinkin 《Journal of inclusion phenomena and macrocyclic chemistry》2000,36(2):153-162
The formation of strong molecular complexes of calix[4]recorcinolarene with the polyfunctional phosphoorganic compound diglycidylmethyl phosphonate was observed in organic media. Complexes of different compositions were obtained with the ratio of the initial reagents of 1 : 1 and 1 : 4. Three complexes were isolated and characterized by elemental analysis; their 1H and 13C NMR spectroscopic parameters are also discussed. 相似文献
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