The aluminum-azido species(Me_(3)SiN_(3))Al(C_(6)F_(5))_(3) thermally converts to[(C_(6)F_(5))_(2)Al(μ-N_(3))]_(2)2.Further reactions with Me_(3)SiN_(3) afford[(C_(6)F_(5))_(2)Al(μ-N_(3))_(2)]_(3)Al which contains u...The aluminum-azido species(Me_(3)SiN_(3))Al(C_(6)F_(5))_(3) thermally converts to[(C_(6)F_(5))_(2)Al(μ-N_(3))]_(2)2.Further reactions with Me_(3)SiN_(3) afford[(C_(6)F_(5))_(2)Al(μ-N_(3))_(2)]_(3)Al which contains unique four Al centers bound to six bridging azides.Compound 2 is shown to be a Lewis superacid both experimentally and theoretically,forming dimeric products in reactions with diphenylphosphine oxide or tetrahydrofuran and a monomeric adduct with an NHC donor.Compound 2 also undergoes“click”reactions with alkynes to give dimeric,trimeric and tetrameric products depending on the nature of the substitution on the alkyne,which demonstrates the ability of the reagent to control the nature of aggregation.展开更多
基金financial support from the National Natural Science Foundation of China(No.22401163,42388101 and 92256203)Ningbo Natural Science Foundation(No.2022J108)the Technology and Engineering Center for Space Utilization,the Chinese Academy of Sciences(No.KJZ-YY-NSM0406).
文摘The aluminum-azido species(Me_(3)SiN_(3))Al(C_(6)F_(5))_(3) thermally converts to[(C_(6)F_(5))_(2)Al(μ-N_(3))]_(2)2.Further reactions with Me_(3)SiN_(3) afford[(C_(6)F_(5))_(2)Al(μ-N_(3))_(2)]_(3)Al which contains unique four Al centers bound to six bridging azides.Compound 2 is shown to be a Lewis superacid both experimentally and theoretically,forming dimeric products in reactions with diphenylphosphine oxide or tetrahydrofuran and a monomeric adduct with an NHC donor.Compound 2 also undergoes“click”reactions with alkynes to give dimeric,trimeric and tetrameric products depending on the nature of the substitution on the alkyne,which demonstrates the ability of the reagent to control the nature of aggregation.
