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Metalla‐isosilabenzenes and metalla‐isogermabenzenes have been successfully synthesized by the formal [5+1]‐cycloaddition of diethynylsilane or diethynylgermane with simple metal complexes. This is the first example of a heavier Group 14 metalla‐isobenzene isomer bearing a cumulative double bond motif within a metallacycle. These novel complexes were fully characterized by NMR spectroscopy and single‐crystal...
Covalent organic frameworks (COFs) with good chemical stability coupled with extended‐conjugation structures are highly preferable. Herein, a fully‐conjugated and chemically stable two‐dimensional COF was synthesized by a one‐pot, three‐components synthesis through a successful conversion of amine, aldehyde, and alkyne groups into the quinoline units as linkages with B(C6F5)3 serving as a Lewis acid...
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