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On the Mechanism of Coherent Dihydrogen Tunneling in Transition Metal Trihydrides
Author(s) -
Limbach HansHeinrich,
Scherer Gerd,
Maurer Marcus,
Chaudret Bruno
Publication year - 1992
Publication title -
angewandte chemie international edition in english
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 5.831
H-Index - 550
eISSN - 1521-3773
pISSN - 0570-0833
DOI - 10.1002/anie.199213691
Subject(s) - quantum tunnelling , metastability , metal , transition metal , chemical physics , hydrogen , scalar (mathematics) , quantum , condensed matter physics , dihydrogen complex , chemistry , coupling constant , materials science , physics , quantum mechanics , catalysis , biochemistry , geometry , mathematics , organic chemistry , hydride
The large, temperature‐dependent scalar coupling constants between the metal‐bonded hydrogen atoms in trihydrido complexes are caused by a mutual quantum exchange between the two identical forms, that is, by a coherent tunneling process. In this report the experimental findings are explained by the reaction pathway sketched below, in which a metastable dihydrogen complex is formed.