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An investigation of the utility of using n.m.r. lanthanide shift reagents for 13 C assignments in selected aromatic ethers and ketones. A detailed description of the lanthanide induced shift ratio method for lanthanide shift reagent–substrate geometry analysis
Author(s) -
Ammon Herman L.,
Mazzocchi Paul H.,
Colicelli Elena J.
Publication year - 1978
Publication title -
organic magnetic resonance
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.483
H-Index - 72
eISSN - 1097-458X
pISSN - 0030-4921
DOI - 10.1002/mrc.1270110102
Subject(s) - lanthanide , reagent , chemistry , substrate (aquarium) , analytical chemistry (journal) , organic chemistry , ion , oceanography , geology
The 13 C and 1 H 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 13 C assignments. The utility and limitations of the LSR method for making 13 C assignments is discussed and the LIS ratio method for LSR‐substrate geometry analysis is described in detail.