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Effect of collision interactions on 13 C nuclear magnetic shielding in monosubstituted benzenes in halogen‐containing solvents
Author(s) -
Jackowski Karol
Publication year - 1984
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.1270220414
Subject(s) - cyclohexane , benzene , chemistry , methylene , solvent , electromagnetic shielding , bromide , halogen , carbon tetrachloride , tetrachloroethylene , iodide , shielding effect , solvent effects , photochemistry , inorganic chemistry , organic chemistry , materials science , alkyl , layer (electronics) , composite material , trichloroethylene
The 13 C nuclear magnetic shielding in benzene and ten monosubstituted benzenes was studied when these compounds were dissolved in cyclohexane, carbon tetrachloride, tetrachloroethylene, methylene bromide and methylene iodide. The results revealed that the observed changes of 13 C magnetic shielding are dependent on both the solute and solvent molecular properties, although the dependence on the solvent is much more significant. It was also shown that the solvent effects for aromatic carbons are independent of the π electron density distribution in an aromatic ring. The observed 13 C deshielding was attributed mainly to overlap effects which take place during molecular collisions.