Seven different[Ln_(2)L_(4)]^(2−)(Ln=La,Nd,Eu,Tb,Er,Tm and Lu)lanthanide-based quadruple-stranded helicates are here reported and transmetalation among the pre-assembled cages is studied.Combining two homonuclear heli...Seven different[Ln_(2)L_(4)]^(2−)(Ln=La,Nd,Eu,Tb,Er,Tm and Lu)lanthanide-based quadruple-stranded helicates are here reported and transmetalation among the pre-assembled cages is studied.Combining two homonuclear helicates,[Ln^(A)_(2)L_(4)]^(2−)and[Ln^(B)_(2)L_(4)]^(2−),leads to the formation of a mixture of homo-and heteronuclear systems due to ion exchange.This dynamic behaviour is studied by electrospray ionization mass spectrometry(ESI-MS)both qualitatively and quantitatively,allowing one to gain information on the thermodynamics and on the kinetics of the process.展开更多
基金Prof.S.Santi of the University of Padova for helpful discussions.This work was funded by the National Research Council(CNR)with grant PROGETTI@CNR P@CNR_01_TerMoSmart,by the University of Padova with grant P-DiSC#01BIRD2021-UNIPDP-DiSC#09BIRD2020-UNIPDby the Deutsche Forschungsgemeinschaft DFG through GRK2376“Confinement-controlled Chemistry”—project 331085229.
文摘Seven different[Ln_(2)L_(4)]^(2−)(Ln=La,Nd,Eu,Tb,Er,Tm and Lu)lanthanide-based quadruple-stranded helicates are here reported and transmetalation among the pre-assembled cages is studied.Combining two homonuclear helicates,[Ln^(A)_(2)L_(4)]^(2−)and[Ln^(B)_(2)L_(4)]^(2−),leads to the formation of a mixture of homo-and heteronuclear systems due to ion exchange.This dynamic behaviour is studied by electrospray ionization mass spectrometry(ESI-MS)both qualitatively and quantitatively,allowing one to gain information on the thermodynamics and on the kinetics of the process.
