Synthesis and NMR-Study of the 2,3,4,5-Tetraethylsilole Dianion [SiC4Et4]2−•2[Li]+
The previously unknown silole dianion [SiC4Et4]2−•2[Li]+ (3) was prepared by the sonication of 1,1-dichloro-2,3,4,5-tetraethyl-1-silacyclopentadiene [Cl2SiC4Et4, 2] with more than four equivalent of lithium in THF. 1H-, 13C-, and 29Si-NMR data of 3 are compared with those of the reported silole dian...
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| Format: | Article |
| Language: | English |
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MDPI AG
2011-09-01
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| Series: | Molecules |
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| Online Access: | http://www.mdpi.com/1420-3049/16/9/8033/ |
| _version_ | 1818497951789481984 |
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| author | Jang-Hwan Hong |
| author_facet | Jang-Hwan Hong |
| author_sort | Jang-Hwan Hong |
| collection | DOAJ |
| description | The previously unknown silole dianion [SiC4Et4]2−•2[Li]+ (3) was prepared by the sonication of 1,1-dichloro-2,3,4,5-tetraethyl-1-silacyclopentadiene [Cl2SiC4Et4, 2] with more than four equivalent of lithium in THF. 1H-, 13C-, and 29Si-NMR data of 3 are compared with those of the reported silole dianion [SiC4Ph4]2−. Trapping of 3 with trimethylchlorosilane gave 1,1-bis(trimethylsilyl)-2,3,4,5-tetraethyl-1-silacyclopentadiene [(Me3Si)2SiC4Et4, 4] in high yield. The silole of 2 was synthesized in high yield in three steps by a modified procedure using Cp2ZrCl2 via Cp2ZrC4Et4 and 1,4-dibromo-1,2,3,4-tetraethyl-1,3-butadiene. |
| first_indexed | 2024-12-10T18:51:49Z |
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| id | doaj.art-7433f8afd37b423b8d8d84e5c39accad |
| institution | Directory Open Access Journal |
| issn | 1420-3049 |
| language | English |
| last_indexed | 2024-12-10T18:51:49Z |
| publishDate | 2011-09-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Molecules |
| spelling | doaj.art-7433f8afd37b423b8d8d84e5c39accad2022-12-22T01:37:17ZengMDPI AGMolecules1420-30492011-09-011698033804010.3390/molecules16098033Synthesis and NMR-Study of the 2,3,4,5-Tetraethylsilole Dianion [SiC4Et4]2−•2[Li]+Jang-Hwan HongThe previously unknown silole dianion [SiC4Et4]2−•2[Li]+ (3) was prepared by the sonication of 1,1-dichloro-2,3,4,5-tetraethyl-1-silacyclopentadiene [Cl2SiC4Et4, 2] with more than four equivalent of lithium in THF. 1H-, 13C-, and 29Si-NMR data of 3 are compared with those of the reported silole dianion [SiC4Ph4]2−. Trapping of 3 with trimethylchlorosilane gave 1,1-bis(trimethylsilyl)-2,3,4,5-tetraethyl-1-silacyclopentadiene [(Me3Si)2SiC4Et4, 4] in high yield. The silole of 2 was synthesized in high yield in three steps by a modified procedure using Cp2ZrCl2 via Cp2ZrC4Et4 and 1,4-dibromo-1,2,3,4-tetraethyl-1,3-butadiene.http://www.mdpi.com/1420-3049/16/9/8033/silolegermoledianiongroup 14 metallolearomaticity |
| spellingShingle | Jang-Hwan Hong Synthesis and NMR-Study of the 2,3,4,5-Tetraethylsilole Dianion [SiC4Et4]2−•2[Li]+ Molecules silole germole dianion group 14 metallole aromaticity |
| title | Synthesis and NMR-Study of the 2,3,4,5-Tetraethylsilole Dianion [SiC4Et4]2−•2[Li]+ |
| title_full | Synthesis and NMR-Study of the 2,3,4,5-Tetraethylsilole Dianion [SiC4Et4]2−•2[Li]+ |
| title_fullStr | Synthesis and NMR-Study of the 2,3,4,5-Tetraethylsilole Dianion [SiC4Et4]2−•2[Li]+ |
| title_full_unstemmed | Synthesis and NMR-Study of the 2,3,4,5-Tetraethylsilole Dianion [SiC4Et4]2−•2[Li]+ |
| title_short | Synthesis and NMR-Study of the 2,3,4,5-Tetraethylsilole Dianion [SiC4Et4]2−•2[Li]+ |
| title_sort | synthesis and nmr study of the 2 3 4 5 tetraethylsilole dianion sic4et4 2 •2 li |
| topic | silole germole dianion group 14 metallole aromaticity |
| url | http://www.mdpi.com/1420-3049/16/9/8033/ |
| work_keys_str_mv | AT janghwanhong synthesisandnmrstudyofthe2345tetraethylsiloledianionsic4et422li |