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13 C and 23 Na solid‐state NMR spectra of organosodium compounds
Author(s) -
Jost Steffen,
Günther Harald
Publication year - 2003
Publication title -
magnetic resonance in chemistry
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.483
H-Index - 72
eISSN - 1097-458X
pISSN - 0749-1581
DOI - 10.1002/mrc.1189
Subject(s) - chemistry , nmr spectra database , quadrupole , chemical shift , spectral line , coupling constant , ring (chemistry) , crystallography , carbon 13 nmr satellite , ion , carbon 13 nmr , nuclear magnetic resonance spectroscopy , fluorine 19 nmr , stereochemistry , atomic physics , organic chemistry , physics , particle physics , astronomy
Abstract For three organosodium complexes, namely triphenylmethylsodium(tmeda) ( 1 ), fluorenylsodium(pmdta) ( 2 ) and fluorenylsodium(tmeda) ( 3 ), 13 C and 23 Na solid‐state FT‐NMR spectra have been measured for the first time. They were analysed in terms of chemical shifts, δ( 13 C) and δ( 23 Na), and 23 Na quadrupole coupling constants, χ( 23 Na). It is shown that the NMR parameters are sensitive to the structural features of the complexes and correlate well with the contact ion‐pair structures of 1 – 3 . 23 Na resonances are shielded by ring current effects of the aromatic ligands. Copyright © 2003 John Wiley & Sons, Ltd.