Much evidence has been provided for the presence of contact-term contribution to paramagnetic shifts induced by lanthanide shift reagents (1) in 'H, 13C, 14N, 19F, and 3'P NMR spectroscopy (2,3). Conspicuous effects of contact shifts (C.S .) have been observed in 13C NMR spectra of stronger Lewis ba
Evidence for the presence of contact term contribution to lanthanide induced shifts in 1H and 13C NMR spectra of pyridine N-oxides
✍ Scribed by Kazuo Tori; Yohko Yoshimura; Masatsune Kainosho; Katsumi Ajisaka
- Publisher
- Elsevier Science
- Year
- 1973
- Tongue
- French
- Weight
- 252 KB
- Volume
- 14
- Category
- Article
- ISSN
- 0040-4039
No coin nor oath required. For personal study only.
📜 SIMILAR VOLUMES
The adoption of a rigorous error analysis of L.I .S. 's allows the non-pseudo-contact components of the Yb(fod)a induced shifts in benzaldehyde and thiophen-Z-aldehyde to be isolated. They are largest at the carbonyl carbon and at the ortho and pam carbons and appear to be entirely due to complexat
In recent years, organic chemists have appeared to treat 'H NMR data not cautiously. Before presenting 'H NMR data,' we must overcome the two tedious problems: (1) how to measure a peak position accurately, and (2) how to analyse a signal pattern. In fact, a description such as "8 4.38 (CHOH, t, J =
## Abstract The complete ^1^H NMR chemical shift assignments of 1,2,3,4,5,6,7,8‐octahydroacridine (**1**), 1,2,3,4,5,6,7,8‐octahydro‐9‐(3‐pyridyl)acridine (**2**), 1,2,3,4,5,6,7,8‐octahydro‐9‐(4‐pyridyl)acridine (**3**) and the corresponding __N__(10)‐oxides **1a**, **2a** and **3a**, respectively,