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1 H NMR study of bacteriochlorophyll a radical anion: Use of difference spectra
Author(s) -
Brereton Richard G.,
Sanders Jeremy K. M.
Publication year - 1982
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.1270190309
Subject(s) - ion , chemistry , diamagnetism , spectral line , bacteriochlorophyll , nmr spectra database , spin density , photochemistry , physics , organic chemistry , magnetic field , quantum mechanics , astronomy , pigment , condensed matter physics
Abstract The radical anion of bacteriochlorophyll a has been monitored by observing differential electron transfer broadening in the 1 H NMR spectrum of diamagnetic bacteriochlorophyll in the presence of a small amount of chemically produced anion. The use of NMR difference spectra clearly indicates which sites in the anion have greatest spin density; these data are compared with other studies on the cation and anion.