Themed collection Frontiers in Main Group Chemistry

The transition-metal-free syntheses of poly(aminoboranes) and poly(phosphinoboranes) are reviewed. These strategies focus on the generation of reactive aminoboranes or phosphinoboranes in situ, which then undergo polymerization.

Separation of lithium and sodium perchlorate through selective chelation of lithium perchlorate with the hexadentate ligand DETAN.

The high reactivity of a sterically accessible phosphonioacetylide was tamed via alkali metal coordination. The resulting complexes are precursors for introducing the rod-shaped, strongly electron-donating ligand into transition metal complexes.

CO₂ and EtNCO are inserted into the Ge–Si bonds of an NHC-bis(germylene) with nucleophilic Ge(II) lone-pairs and an electrophilic para-silylenearylene backbone. CAAC-induced fragmentation yields a germylene with a tethered CAAC-radical.