The effect of lanthanide shift reagents on the proton NMR spectra of vinyl polymers. Final report Jun 74-Feb 76
An attempt was made to characterize the stereoregularity of vinyl polymers using paramagnetic lanthanide shift reagents in conjunction with a 60 MHz nmr spectrometer. Eu(fod)3 and Eu(fod)3-d27 were the reagents of choice based on a combination of line broadening effects and the magnitude of the induced chemical shift of the t-butyl protons in poly (t-butyl-methacrylate). Isotactic and atactic samples of poly(methylmethacrylate) were investigated, but the use of the aforementioned shift reagents did not significantly improve the spectral resolution of triad sequences in these polymers. It was concluded that lanthanide shift reagents, when used in conjunction with a 60 MHz instrument, do not yield any additional information about microstructures of vinyl polymers. (Author)
- Research Organization:
- Oakland Univ., Rochester, MI (USA). Dept. of Chemistry
- OSTI ID:
- 7100507
- Report Number(s):
- AD-A-038086
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
400301* -- Organic Chemistry-- Chemical & Physicochemical Properties-- (-1987)
ELEMENTS
ESTERS
EUROPIUM
MAGNETIC RESONANCE
METALS
NUCLEAR MAGNETIC RESONANCE
ORGANIC COMPOUNDS
ORGANIC POLYMERS
POLYACRYLATES
POLYMERS
POLYVINYLS
RARE EARTHS
RESONANCE
SPECTRA
STEREOCHEMISTRY