Journal
CHEMICAL SCIENCE
Volume 6, Issue 9, Pages 5230-5234Publisher
ROYAL SOC CHEMISTRY
DOI: 10.1039/c5sc01516b
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Funding
- Deutsche Forschungsgemeinschaft (DFG) [RO 224/64-1]
- CSIR, India [01(2770)/13/EMR-II]
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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 degrees C. Herein, we report on the synthesis, isolation, and characterization of carbene stabilized molecular silicondiselenide in the form of (cAAC)(2)Si2Se4 (3) [cAAC = cyclic alkyl(amino)carbene]. 3 is synthesized via reaction of diatomic silicon(0) compound (cAAC)(2)Si-2 (2) with black selenium powder at -78 degrees 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 degrees 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.
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