A soluble molecular variant of the semiconducting silicondiselenide.

Mondal, K. C.; Roy, S.; Dittrich, B.; Maity, B.; Dutta, S.; Koley, D.; Vasa, S. K.; Linser, R.; Decherta, S.; Roesky, H. W.

doi:10.1039/C5SC01516B

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A soluble molecular variant of the semiconducting silicondiselenide.

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Vasa, S. K.
Research Group of Solid-State NMR-2, MPI for Biophysical Chemistry, Max Planck Society;

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Linser, R.
Research Group of Solid-State NMR-2, MPI for Biophysical Chemistry, Max Planck Society;

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Citation

Mondal, K. C., Roy, S., Dittrich, B., Maity, B., Dutta, S., Koley, D., et al. (2015). A soluble molecular variant of the semiconducting silicondiselenide. Chemical Science, 6(9), 5230-5234. doi:10.1039/C5SC01516B.

Cite as: https://hdl.handle.net/11858/00-001M-0000-0027-D3F8-3

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. 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.