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Cover Picture (Angew. Chem. Int. Ed. Engl. 8/1993)
Publication year - 1993
Publication title -
angewandte chemie international edition in english
Language(s) - English
Resource type - Reports
SCImago Journal Rank - 5.831
H-Index - 550
eISSN - 1521-3773
pISSN - 0570-0833
DOI - 10.1002/anie.199311111
Subject(s) - cover (algebra) , citation , exothermic reaction , art history , chemistry , physics , library science , art , computer science , thermodynamics , engineering , mechanical engineering
The cover picture refers to the Nobel review by R. A. Marcus on pages 1111–1121. The simplest chemical reaction—self‐exchange electron transfer—is illustrated in the lower region with the reaction between green MnO 4 2−and violet MnO 4 − , which in water occurs approximately 100 000 times per second. The potential function in the upper region illustrates a central point of the Marcus theory on the relation between the rate of an electron transfer reaction and its exothermicity: in very exothermic reactions an inverse region can occur, in which an increase of the free energy E correlates with a decrease in the reaction rate, that is, an increase in E a . The pictures are taken from a poster, which was published by the Royal Swedish Academy of Science on conferment of the Nobel Prize in Chemistry.