Solvent-assisted reversible proton transfer within an intermolecular dihydrogen bond and characterization of an unstable dihydrogen complex

Authors
Grundemann, S Ulrich, S Limbach, HH Golubev, NS Denisov, GS Epstein, LM Sabo-Etienne, S Chaudret, B
Citation
S. Grundemann et al., Solvent-assisted reversible proton transfer within an intermolecular dihydrogen bond and characterization of an unstable dihydrogen complex, INORG CHEM, 38(11), 1999, pp. 2550
Citations number
46
Categorie Soggetti
Inorganic & Nuclear Chemistry
Journal title
INORGANIC CHEMISTRY
ISSN journal
00201669 → ACNP
Volume
38
Issue
11
Year of publication
1999
Database
ISI
SICI code
0020-1669(19990531)38:11<2550:SRPTWA>2.0.ZU;2-H
Abstract
A reversible protonation of transition metal hydrides by weak proton donors has been found by NMR spectroscopy. The reactants are mixed at room temper ature, but the protonation is induced only at low temperature by an increas e of the dielectric constant of a suitably chosen solvent. Under these cond itions the decomposition via dihydrogen release is avoided. Thus, the unsta ble complex [Cp*RuH4(PCy3)](+) was obtained in CDF3/CDF2Cl by protonation o f Cp*RuH3(PCy3) with fluorinated alcohols.