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A NMR Chemical Shift Analysis on Two Nonconjugated Tri‐π‐Systems
Author(s) -
Chow Tahsin J.,
Chu KuoPin,
Liu ShouShun,
Liu ChingYang
Publication year - 1999
Publication title -
journal of the chinese chemical society
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.329
H-Index - 45
eISSN - 2192-6549
pISSN - 0009-4536
DOI - 10.1002/jccs.199900112
Subject(s) - chemistry , chemical shift , methylene , delocalized electron , electron delocalization , electronic effect , computational chemistry , organic chemistry , steric effects
Electronic interactions in two nonconjugated tri‐π systems are analyzed in terms of 13 C NMR chemical shifts. Comparisons of chemical shift values (Δδ) among di‐methylenes, di‐ketones and methylene‐ketones support the presence of electron delocalization among the three π moieties.
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