Application of lanthanide-shift reagents in pulsed Fourier-transform nuclear magnetic resonance

Thesis/Dissertation · Wed Jan 01 04:00:00 UTC 1986

OSTI ID:5941624

Zektzer, A S

The application of lanthanide-shift reagents (LSR's) to pulsed NMR is presented. Several areas were investigated in which the information content of the data was enhanced through the use of an LSR. The problem first investigated combines the ability of LSR's to influence both the shift and relaxation times of the substrate nuclei. Adamantan-2-ol which has a second-order proton spectra was simplified to first-order by the addition of Eu(fod)/sub 3/ at which time the T/sub 1/-relaxation times of each resonance were measured at several ratios of (LSR)/(sub) in order to calculate the T/sub 1/'s of the bound species by multiple linear regression. The second application involved using LSR's to cause shift changes in compounds not usually accessible to LSR's. Sulfur heterocycles, which show little if any shift with LSR's, were found to exhibit large shifts when silver organic salts were used in combination with an LSR such as Dy(fod)/sub 3/ or Ho(fod)/sub 3/. The last application was the assignment of the /sup 1/H and /sup 13/C resonances of a thieno-pyridine and the comparison of these assignments to those from high-field two-dimensional NMR techniques.

• Research Organization: University of South Florida, St. Petersburg (USA)
• OSTI ID: 5941624
• Country of Publication: United States
• Language: English

Related Subjects

37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY
400102 -- Chemical & Spectral Procedures
656002* -- Condensed Matter Physics-- General Techniques in Condensed Matter-- (1987-)
75 CONDENSED MATTER PHYSICS
SUPERCONDUCTIVITY AND SUPERFLUIDITY
BARYONS
CARBON 13
CARBON ISOTOPES
ELEMENTARY PARTICLES
ELEMENTS
EVEN-ODD NUCLEI
FERMIONS
FOURIER TRANSFORMATION
HADRONS
INTEGRAL TRANSFORMATIONS
ISOTOPES
LIGHT NUCLEI
MAGNETIC RESONANCE
METALS
NUCLEAR MAGNETIC RESONANCE
NUCLEI
NUCLEONS
PROTONS
RARE EARTHS
RELAXATION TIME
RESONANCE
SPECTRAL SHIFT
STABLE ISOTOPES
SULFUR COMPOUNDS
TRANSFORMATIONS