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Probing C84-embedded Si Substrate Using Scanning Probe Microscopy and Molecular Dynamics
Published on: September 28, 2016
A soluble molecular variant of the semiconducting silicondiselenide
Kartik Chandra Mondal1, Sudipta Roy1, Birger Dittrich2
1Institut für Anorganische Chemie , Georg-August-Universität , 37077 Göttingen , Germany .
Abstract:
Silicondiselenide is a semiconductor and exists as an insoluble polymer (SiSe2) 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.
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