Children learn through play, and they learn more than adults might expect. Science experiments are a great way to spark their curiosity, get their minds active, and encourage them to do something that doesn’t involve a screen. 101691-65-0, C13H18O4S. A document type is Article, introducing its new discovery., category: Tetrahydropyrans
Twisted Si=N bonds: Matrix isolation of bridgehead silanimines
We report the IR and UV-vis spectra of three bridgehead silanimines, 1-sila-2-azabicyclo[3.2.2]non-1(2)-ene, 1-sila-2-azabicyclo[3.2.1]oct-1(2)-ene, and 1-sila-2-azabicyclo[2.2.2]oct-1(2)-ene, prepared in matrix isolation by UV irradiation of bridgehead silyl azide precursors and characterized by chemical trapping with trimethoxymethylsilane with and without prior selective photodestruction with light of suitable wavelengths. The IR spectra of the 14N and 15N species and the n ? pi* transition in their UV-vis spectra are in good agreement with ab initio computations. It is concluded that pi bonding plays a crucial role in determining the properties of silanimines.
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Reference：
Tetrahydropyran – Wikipedia,
Tetrahydropyran – an overview | ScienceDirect Topics