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A soluble molecular variant of the semiconducting silicondiselenide† †Electronic supplementary information (ESI) available: Syntheses, NMR, UV-vis, Raman spectra, crystallographic table, and theoretical details. CCDC 926618, 927696, 948799, 983863, 1060365. For ESI and crystallographic data in CIF or other electronic format see DOI: 10.1039/c5sc01516b Click here for additional data file. Click here for additional data file
- Source :
- Chemical Science
- Publication Year :
- 2015
- Publisher :
- Royal Society of Chemistry, 2015.
-
Abstract
- Silicondiselenide is a semiconductor and exists as an insoluble polymer (SiSe2)n which is prepared by reacting elemental silicon with selenium powder in the temperature range of 400–850 °C.<br />Silicondiselenide is a semiconductor and exists as an insoluble polymer (SiSe2)n which is prepared by reacting elemental silicon with selenium powder in the temperature range of 400–850 °C. Herein, we report on the synthesis, isolation, and characterization of carbene stabilized molecular silicondiselenide in the form of (cAAC)2Si2Se4 (3) [cAAC = cyclic alkyl(amino)carbene]. 3 is synthesized via reaction of diatomic silicon(0) compound (cAAC)2Si2 (2) with black selenium powder at –78 °C to room temperature. The intensely orange colored compound 3 is soluble in polar organic solvents and stable at room temperature for a month under an inert atmosphere. 3 decomposes above 245 °C. The molecular structure of 3 has been confirmed by X-ray single crystal diffraction. It is also characterized by UV-vis, IR, Raman spectroscopy and mass spectrometry. The stability, bonding, and electron density distributions of 3 have been studied by theoretical calculations.
Details
- Language :
- English
- ISSN :
- 20416539 and 20416520
- Volume :
- 6
- Issue :
- 9
- Database :
- OpenAIRE
- Journal :
- Chemical Science
- Accession number :
- edsair.pmid..........577d02a7e13257498cb343d155417dfb