Variable-temperature and variable-pressure NMR kinetic study of solvent exchange on Ru(H/sub 2/O)/sub 6//sup 3+/, Ru(H/sub 2/O)/sub 6//sup 2+/, and Ru(CH/sub 3/CN)/sub 6//sup 2+1,2/

Journal Article · Wed Mar 09 00:00:00 EST 1988 · Inorg. Chem.; (United States)

DOI:https://doi.org/10.1021/ic00278a025· OSTI ID:5762179

Rapaport, I; Helm, L; Merbach, A E; Bernhard, P; Ludi, A

Water exchange on ruthenium(II) and ruthenium(III) was studied by /sup 17/O NMR and acetonitrile exchanges on ruthenium(II) was studied by /sup 1/H NMR spectroscopy as a function of temperature and pressure. The kinetic parameters reported for Ru(II) imply that the solvent exchange on Ru/sup 2+/ occurs via an interchange I mechanism for both H/sub 2/O and CH/sub 3/CN. The kinetic parameters are also reported for Ru(III). These data are conclusive for an associative interchange I/sub a/ mechanism for water exchange on Ru(H/sub 2/O)/sub 6//sup 3+/ but for an I mechanism on the deprotonated species Ru(H/sub 2/O)/sub 5/(OH)/sup 2+/. These mechanistic results for low-spin ruthenium solvates are compared to those of other di- and trivalent transition-metal ions. 39 references, 8 figures, 5 tables.

• Research Organization: Univ. of Lausanne (Switzerland)
• OSTI ID: 5762179
• Journal Information: Inorg. Chem.; (United States), Vol. 27:5
• Country of Publication: United States
• Language: English

Related Subjects

37 INORGANIC
ORGANIC
PHYSICAL AND ANALYTICAL CHEMISTRY
RUTHENIUM COMPOUNDS
CHEMICAL REACTIONS
WATER
EXPERIMENTAL DATA
NUCLEAR MAGNETIC RESONANCE
OXYGEN 17
DATA
EVEN-ODD NUCLEI
HYDROGEN COMPOUNDS
INFORMATION
ISOTOPES
LIGHT NUCLEI
MAGNETIC RESONANCE
NUCLEI
NUMERICAL DATA
OXYGEN COMPOUNDS
OXYGEN ISOTOPES
REFRACTORY METAL COMPOUNDS
RESONANCE
STABLE ISOTOPES
TRANSITION ELEMENT COMPOUNDS
400201* - Chemical & Physicochemical Properties
400202 - Isotope Effects
Isotope Exchange
& Isotope Separation