Nitrogen-15 NMR spectra of the complexes and ] , each containing 15N at natural abundance, were obtained by indirect detection (HMQC) using phosphorus as the observed nucleus. Data collection times varied from 4 h to 4 d depending upon the accuracy of the estimated value of 2J(31P,15N) used to opti
Nitrogen-15 NMR Spectroscopy of Phosphazenes Based on Phosphorus-31 Detection
✍ Scribed by Fernando López-Ortiz; Elvira Peláez-Arango; Paloma Gómez-Elipe
- Publisher
- Elsevier Science
- Year
- 1996
- Tongue
- English
- Weight
- 135 KB
- Volume
- 119
- Category
- Article
- ISSN
- 1064-1858
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NMR characterization of natural abundance (15)N in phosphorus-nitrogen compounds can be performed through (31)P using inverse detection methods. When the (31)P-(15)N scalar coupling is small, its observation is greatly disturbed by the residual signal coming from the 99.6% abundant (14)N isotopomer
A 31 P and 15 N NMR study of cyclotriphosphazenes 1-4 and preparation of polyphosphazenes, and the properties of these polyphosphazene 5 has been carried out including solvent and materials can be tuned by the incorporation of different substitusubstituent effects. 15 N chemical shifts and 31 P, 15
## Abstract Hahn‐echo extended (HEED) pulse sequences in one‐ and two‐dimensional experiments were successfully applied to phosphorus–nitrogen compounds with two PN bonds {2‐chloro‐1,3‐dimethyl‐1,3,2‐diazaphospholidine (1), 2‐__tert__‐butyl‐1,3‐dimethyl‐1,3,2‐dizaphospholidine (2), bis(diethylamin