Oxygen-containing compounds in polydimethylsilanes and -carbosilanes

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Resumo

An analysis of fractions extracted from polydimethylsilanes, as well as distillates obtained during the synthesis of poly(oligo)carbosilanes was carried out. By the methods of gel permeation chromatography and chromatography-mass spectrometry, the range of molecular weights in extracts and distillates, the composition and structure of compounds, as well as the sequence of their retention times on the chromatographic column were determined. It was established that the compounds extracted from polydimethylsilanes are low molecular weight cycles containing methylsilane and/or methylsiloxane units. In distillates, compared with extracts, the number of low molecular weight compounds containing individual or mixed methylsilane, carbosilane and siloxane units increases.

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Sobre autores

А. Filippov

State Research Institute of Chemistry and Technology of Organoelement Compounds

Autor responsável pela correspondência
Email: amphil@yandex.ru
Rússia, Moscow, 105118

A. Gorodetskaya

State Research Institute of Chemistry and Technology of Organoelement Compounds

Email: amphil@yandex.ru
Rússia, Moscow, 105118

V. Prokhortseva

State Research Institute of Chemistry and Technology of Organoelement Compounds

Email: amphil@yandex.ru
Rússia, Moscow, 105118

D. Zhigalov

State Research Institute of Chemistry and Technology of Organoelement Compounds

Email: amphil@yandex.ru
Rússia, Moscow, 105118

D. Zhuk

State Research Institute of Chemistry and Technology of Organoelement Compounds

Email: amphil@yandex.ru
Rússia, Moscow, 105118

P. Storozhenko

State Research Institute of Chemistry and Technology of Organoelement Compounds

Email: amphil@yandex.ru
Rússia, Moscow, 105118

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2. Fig. 1. Mass chromatograms of samples From 1 (a) and From g2 (b).

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3. Fig. 2. Mass spectra of samples From 1 (a) and From g2 (b).

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4. Scheme 1.

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5. Scheme 2.

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6. Scheme 3.

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7. Scheme 4.

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8. Scheme 5.

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9. Scheme 6. m/z = 115 – 1,3-dimethyl-1,3-disilacyclobutyl cation; m/z = 116 – 1,3-dimethyl-1,3-disilacyclobutane molecular cation; 59 – MeSi radical(=O)• or •CH2=SiOH; 60 is a neutral fragment of MeNSi=O or CH2=Si(H)OH; 104 –.

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10. Scheme 6.

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11. Scheme 8.

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