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Heterolytic Cleavage of H 2 at a Sulfur‐Bridged Dinuclear Ruthenium Center
Author(s) -
Sellmann Dieter,
Prakash Raju,
Heinemann Frank W.,
Moll Matthias,
Klimowicz Maria
Publication year - 2004
Publication title -
angewandte chemie international edition
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 5.831
H-Index - 550
eISSN - 1521-3773
pISSN - 1433-7851
DOI - 10.1002/anie.200453717
Subject(s) - heterolysis , ruthenium , sulfanyl , chemistry , hydride , cleavage (geology) , sulfur , protonation , bond cleavage , stereochemistry , medicinal chemistry , catalysis , hydrogen , materials science , organic chemistry , ion , composite material , fracture (geology)
Incoming molecular hydrogen breaks the RuS bridges in the diruthenium complex [Ru(py bu S 4 )] 2 (py bu S 4 2− =2,6‐bis(2‐sulfanyl‐3,5‐di‐ tert‐ butylphenylthio)dimethylpyridine(2−)) shown, and the HH bond is cleaved to give H + and H − in the resulting thiol‐protonated hydride [Ru(H)(py bu S 4 ‐H)]. The proposed mechanism of the heterolytic cleavage of H 2 at the RuS centers is intriguing and possibly relevant to the activation of H 2 by hydrogenases.