| 摘 要： | IntroductionCation- π interactions have come to be appreci-ated as an important noncovalent binding force inmany areas of modern chemistry,such as materialdesign,molecular biology,host- guest and supra-molecular chemistry[1_ 3 ] .These interactions havebeen investigated in the gas phase[4] ,in aqueousmedia by using synthetic receptors[5,6] ,in a numberof protein systems[1,5,7] and in many metal complex-es provided by crystallographic studies[8_ 16] .Cations thatshow cation-π interactions,inc…
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