Reactions of -carborane-fused bis-silylene 1 with isocyanate/isothiocyanate molecules furnished a series of SiN/SiS-heterocycles, which show distinct styles of cyclization and were theoretically studied.
The compound Bis(1-adamantyl)phosphanylsilylene (1) was heated with various alkynes under microwave conditions, leading to the creation of SiP-heterocycles (3a-d) that exhibit fluorescence and unique isomerization properties from silirene intermediates.
Additionally, reacting compound 1 with AdC≡P produced a heavy form of cyclopentadiene (4), a process that involves breaking a rarely seen Si(II)-P bond in silylene chemistry.
This study highlights new chemical transformations and properties associated with silylene derivatives, advancing the understanding of their reactivity and applications.