Abstract
Silicondiselenide is a semiconductor and exists as an insoluble polymer (SiSe
)
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)
Si
Se
(
) [cAAC = cyclic alkyl(amino)carbene].
is synthesized
reaction of diatomic silicon(0) compound (cAAC)
Si
(
) with black selenium powder at -78 °C to room temperature. The intensely orange colored compound
is soluble in polar organic solvents and stable at room temperature for a month under an inert atmosphere.
decomposes above 245 °C. The molecular structure of
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
have been studied by theoretical calculations.