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. 14187-32-7, C20H24O6. A document type is Article, introducing its new discovery., Formula: C20H24O6
2,3,13,14-Tetrakis(bromomethyl)dibenzo-18-crown-6 (1) has been demonstrated to be a versatile synthetic intermediate for constructing multinucleating ligands with a hard-donor, crown ether centre. By using this intermediate, novel salts of tetrakis(imidazoliomethyl)dibenzo-18-crown-6, [H4L 1]X4 (2: X- = Br-; 4: X- = PF6-), and tetrakis(benzimidazoliomethyl)dibenzo-18- crown-6, [H4L2]X4 (3: X- = Br -; 5: X- = PF6-), were prepared. These salts are precursors to novel tetrakis(N-heterocyclic carbene) complexes spanned by a crown ether bridge capable of binding various hard metal ions. Thetetrakis(imidazoliomethyl) salt 4 was used to prepare the bimetallic rhodium complexes [{(cod)Rh}2(mu-L1)][PF6] 2 (6) and [{(CO)2Rh}2(mu-L 1)][PF6]2 (7). These complexes selectively bind alkali metal ions. Copyright
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