An investigation of the utility of using n.m.r. lanthanide shift reagents for 13C assignments in selected aromatic ethers and ketones. A detailed description of the lanthanide induced shift ratio method for lanthanide shift reagent–substrate geometry analysis
- 1 January 1978
- journal article
- research article
- Published by Wiley in Magnetic Resonance in Chemistry
- Vol. 11 (1) , 1-8
- https://doi.org/10.1002/mrc.1270110102
Abstract
The 13C and 1H spectra of a series of aromatic ketones, ethers and keto‐ethers were studied using the lanthanide shift reagent (LSR) Yb(fod)3 and the data analyzed using the lanthanide induced shift (LIS) ratio method. Studies were carried out on phenalenone, 6‐methoxyphenalenone, 1‐ and 2‐methoxynaphthalene, 1‐indanone, 5‐ and 6‐methoxy‐1‐indanone and flavone and the data obtained subjected to LSR‐substrate geometry analysis as a means of making 13C assignments. The utility and limitations of the LSR method for making 13C assignments is discussed and the LIS ratio method for LSR‐substrate geometry analysis is described in detail.Keywords
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