## Abstract The transmission of electronic effects across the ferrocene analogues of chalcones [3‐aryl‐1‐ferrocenyl‐2‐propene‐1‐ones (series 1) and 1‐aryl‐3‐ferrocenyl‐2‐propene‐1‐ones (series 2)], as well as the conformations of both types of ferrocene analogues have been studied. The ferrocene an
13C NMR spectra of cyclomercurated ferrocenylimines: Substituent effects and conformations in the ferrocenes
✍ Scribed by Yang Jie Wu; Shou Quan Huo; Li Yang; Chen Xia Du
- Publisher
- Elsevier Science
- Year
- 1995
- Tongue
- English
- Weight
- 386 KB
- Volume
- 490
- Category
- Article
- ISSN
- 0022-328X
No coin nor oath required. For personal study only.
📜 SIMILAR VOLUMES
## Abstract The ^13^C NMR spectra of eight norethisterone derivatives are presented. Substituent chemical shifts for the methyl group at C‐18, the methylene group at C‐11 and the Δ^15^ double bond are evaluated and discussed.
Aromatic I3C chemical shifts of 4-and hubstituted pyridine N-oxides in aprotic and protic solvents are reported and discussed. Changes in chemical shifts caused by hydrogen bonding and protonation are much smaller than those induced by a substituent, and are not related to the pK, values of N-oxides
## Abstract Acylation of allyl alcohols induces strong carbon shifts, shielding γ and deshielding δ effects. These shifts are a consequence of through‐bond polarization of the olefinic carbons. Allyl ethers show similar, but milder perturbations. The olefinic carbon shifts reveal a strong concentra
## Abstract A ^13^C NMR study of a series of 3‐aryl‐2‐thioxo‐4‐imidazolidinones, which are capable of existing as enantiomeric or diastereomeric rotational isomers about the aryl CN bond, shows that rates of internal rotation are slow at the probe temperature. The effects of hetero‐ and aryl‐ring