Molecules 2011, 16(9), 8033-8040; doi:10.3390/molecules16098033
Communication

Synthesis and NMR-Study of the 2,3,4,5-Tetraethylsilole Dianion [SiC4Et4]2−•2[Li]+

email
Received: 31 August 2011; in revised form: 8 September 2011 / Accepted: 14 September 2011 / Published: 16 September 2011
(This article belongs to the Special Issue Organosilicon Chemistry)
This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
Abstract: 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.
Keywords: silole; germole; dianion; group 14 metallole; aromaticity
PDF Full-text Download PDF Full-Text [419 KB, Updated Version, uploaded 18 June 2014 19:40 CEST]
The original version is still available [420 KB, uploaded 18 June 2014 19:40 CEST]

Export to BibTeX |
EndNote


MDPI and ACS Style

Hong, J.-H. Synthesis and NMR-Study of the 2,3,4,5-Tetraethylsilole Dianion [SiC4Et4]2−•2[Li]+. Molecules 2011, 16, 8033-8040.

AMA Style

Hong J-H. Synthesis and NMR-Study of the 2,3,4,5-Tetraethylsilole Dianion [SiC4Et4]2−•2[Li]+. Molecules. 2011; 16(9):8033-8040.

Chicago/Turabian Style

Hong, Jang-Hwan. 2011. "Synthesis and NMR-Study of the 2,3,4,5-Tetraethylsilole Dianion [SiC4Et4]2−•2[Li]+." Molecules 16, no. 9: 8033-8040.

Molecules EISSN 1420-3049 Published by MDPI AG, Basel, Switzerland RSS E-Mail Table of Contents Alert