Solvation-shell geometry of copper ion in methanol and in acetone and a molecular picture of preferential solvation of copper ion by methanol in methanol-acetone mixed solvent determined by electron spin-echo modulation analysis

Journal Article · Thu Jul 24 04:00:00 EDT 1980 · J. Phys. Chem.; (United States)

DOI:https://doi.org/10.1021/j100452a018· OSTI ID:5070294

Ichikawa, T; Kevan, L

Electron spin-echo modulation studies have been carried out for Cu/sup 2 +/ in CD/sub 3/OH, CH/sub 3/OD, and CD/sub 3/COCD/sub 3/ to deduce the cation solvation-shell geometry in these solvents. The results indicate that the Cu/sup 2 +/ is solvated by six molecules in both methanol and acetone with the molecular dipoles of these molecules oriented toward Cu/sup 2 +/. The Cu/sup 2 +/ to nearest solvent molecule oxygen distance is 2.1 A for both solvents. In mixed solvents the basic solvation-shell geometry does not change, but methanol preferentially solvates Cu/sup 2 +/ in comparison with acetone. A quantitative study shows that the probability of finding methanol in the first solvation shell of Cu/sup 2 +/ is 78% more than statistical over the range of 9 to 40 mol % methanol in acetone. This constant probability suggests the absence of cooperative effects in the solvation process.

• Research Organization: Wayne State Univ., Detroit MI
• OSTI ID: 5070294
• Journal Information: J. Phys. Chem.; (United States), Journal Name: J. Phys. Chem.; (United States) Vol. 84:15; ISSN JPCHA
• Country of Publication: United States
• Language: English

Related Subjects

37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY
400201* -- Chemical & Physicochemical Properties
ACETONE
ACOUSTIC ESR
ALCOHOLS
CATIONS
CHARGED PARTICLES
COPPER COMPOUNDS
DATA
DEUTERIUM
ELECTRON SPIN RESONANCE
EXPERIMENTAL DATA
HYDROGEN ISOTOPES
HYDROXY COMPOUNDS
INFORMATION
IONS
ISOTOPES
KETONES
LABELLED COMPOUNDS
LIGHT NUCLEI
MAGNETIC RESONANCE
METHANOL
NUCLEI
NUMERICAL DATA
ODD-ODD NUCLEI
ORGANIC COMPOUNDS
RESONANCE
SOLVATION
STABLE ISOTOPES
TRANSITION ELEMENT COMPOUNDS