Premium
Electron transfer in biological systems
Author(s) -
Larsson Sven
Publication year - 2009
Publication title -
international journal of quantum chemistry
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.484
H-Index - 105
eISSN - 1097-461X
pISSN - 0020-7608
DOI - 10.1002/qua.560220736
Subject(s) - electron transfer , atomic orbital , adiabatic process , chemical physics , chemistry , transfer (computing) , electron , resonance (particle physics) , sulfur , quantum , atomic physics , diffusion , molecular physics , physics , quantum mechanics , photochemistry , computer science , organic chemistry , parallel computing
The conditions for bridged resonance transfer are derived from a time‐dependent quantum mechanical treatment of a model system. It is suggested that biological transfer is characterized by small reaction barriers and that uncontrolled diffusion of electrons is prevented by nonadiabatic behavior in the electron transfer process. Adiabatic transfer pathways should have well overlapping orbitals without gaps. Some examples are given. It is finally suggested that sulfur atoms also may act as exchange centers and thereby divide up the transfer distance into smaller parts.