Electron spin echo study of Nd/sup 3 +/ solvation geometry in ethanol glasses. Disorientation of molecular dipoles in the first solvation shell
Electron spin echo modulation (ESEM) studies have been carried out for Nd/sup 3 +/ in ethanol glasses at 4.2/sup 0/K. ESEM analysis of Nd/sup 3 +/ in CH/sub 3/CH/sub 2/OD indicates ninefold coordination of ethanol in the first solvation shell. By using the specifically deuterated ethanols CH/sub 3/CH/sub 2/OD, CH/sub 3/CD/sub 2/OH, and CD/sub 3/CH/sub 2/OH, ESEM analysis of deuterium modulation in three-pulse electron spin echo decay curves gives the distances to the various deuteron groups. These distances establish that the molecular dipole of ethanol is disoriented from Nd/sup 3 +/ by about 35/sup 0/. This contrasts with methanol solvation of Nd/sup 3 +/ where the methanol moleculr dipole is oriented toward Nd/sup 3 +/. The difference between methanol and ethanol solvation is attributed to steric interactions. 4 figures.
- Research Organization:
- Univ. of Houston, TX
- OSTI ID:
- 6540045
- Journal Information:
- J. Phys. Chem.; (United States), Journal Name: J. Phys. Chem.; (United States) Vol. 86:14; ISSN JPCHA
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
400201* -- Chemical & Physicochemical Properties
400301 -- Organic Chemistry-- Chemical & Physicochemical Properties-- (-1987)
ACOUSTIC ESR
ALCOHOLS
ANISOTROPY
CATIONS
CHARGED PARTICLES
CHLORIDES
CHLORINE COMPOUNDS
DATA
DEUTERIUM COMPOUNDS
DISSOLUTION
ELECTRON SPIN RESONANCE
ETHANOL
EXPERIMENTAL DATA
GLASS
HALIDES
HALOGEN COMPOUNDS
HYDRATES
HYDROGEN COMPOUNDS
HYDROXY COMPOUNDS
INFORMATION
IONS
MAGNETIC RESONANCE
MATRIX ISOLATION
MODULATION
NEODYMIUM CHLORIDES
NEODYMIUM COMPOUNDS
NUMERICAL DATA
ORGANIC COMPOUNDS
QUANTITY RATIO
RARE EARTH COMPOUNDS
RESONANCE
SOLVATION
STRUCTURAL CHEMICAL ANALYSIS
TEMPERATURE DEPENDENCE
TIME DEPENDENCE
ULTRALOW TEMPERATURE