Some nitrogen-14 NMR studies in solids

Technical Report · Tue Nov 01 00:00:00 EST 1983

DOI:https://doi.org/10.2172/5367708· OSTI ID:5367708

Pratum, T. K.

The first order quadrupolar perturbation of the /sup 14/N NMR spectrum yields information regarding the static and dynamic properties of the surrounding electronic environment. Signal to noise problems caused by long /sup 14/N longitudinal relaxation times (T/sub 1/) and small equilibrium polarizations are reduced by rotating frame cross polarization (CP) experiments between /sup 14/N and /sup 1/H. Using quadrupolar echo and CP techniques, the /sup 14/N quadrupolar coupling constants (e/sup 2/qQ/h) and asymmetry parameters (eta) have been obtained for a variety of tetraalkylammonium compounds by observation of their quadrupolar powder patterns at various temperatures. For choline chloride and iodide the /sup 14/N NMR powder patterns exhibit the effects of anisotropic molecular motion, while choline bromide spectra show no such effects.

• Research Organization: Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States)
• DOE Contract Number: AC03-76SF00098
• OSTI ID: 5367708
• Report Number(s): LBL-16998; ON: DE84005172
• Resource Relation: Other Information: Portions are illegible in microfiche products. Thesis
• Country of Publication: United States
• Language: English

Related Subjects

37 INORGANIC
ORGANIC
PHYSICAL AND ANALYTICAL CHEMISTRY
CHOLINE
STRUCTURAL CHEMICAL ANALYSIS
NITROGEN 14
NUCLEAR MAGNETIC RESONANCE
QUATERNARY COMPOUNDS
HALIDES
ALCOHOLS
AMINES
AMMONIUM COMPOUNDS
DRUGS
HALOGEN COMPOUNDS
HYDROXY COMPOUNDS
ISOTOPES
LIGHT NUCLEI
LIPOTROPIC FACTORS
MAGNETIC RESONANCE
NITROGEN ISOTOPES
NUCLEI
ODD-ODD NUCLEI
ORGANIC COMPOUNDS
RESONANCE
STABLE ISOTOPES
400201* - Chemical & Physicochemical Properties