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Resolution of concerted versus sequential mechanisms in photo-induced double-proton transfer reaction in 7-azaindole H-bonded dimer.

Proc Natl Acad Sci U S A

July 1999

Departamento de Quimica Fisica Aplicada, Universidad Autonoma de Madrid, Cantoblanco 28049, Madrid, Spain.

The experimental and theoretical bases for a synchronous or concerted double-proton transfer in centro-symmetric H-bonded electronically excited molecular dimers are presented. The prototype model is the 7-azaindole dimer. New research offers confirmation of a concerted mechanism for excited-state biprotonic transfer.

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