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Electrospray ionization mass spectrometric study of Cu I and Cu II bipyridine complexes employed in atom transfer radical polymerization
Author(s) -
Pintauer Tomislav,
Jasieczek Christina B.,
Matyjaszewski Krzysztof
Publication year - 2000
Publication title -
journal of mass spectrometry
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.475
H-Index - 121
eISSN - 1096-9888
pISSN - 1076-5174
DOI - 10.1002/1096-9888(200011)35:11<1295::aid-jms62>3.0.co;2-f
Subject(s) - chemistry , electrospray ionization , bipyridine , 2,2' bipyridine , mass spectrum , atom transfer radical polymerization , copper , mass spectrometry , medicinal chemistry , halogen , polymer chemistry , inorganic chemistry , ion , polymerization , crystallography , organic chemistry , polymer , alkyl , crystal structure , chromatography
We report an electrospray ionization mass spectrometric study of Cu I and Cu II bipyridine complexes employed in atom transfer radical polymerization. Mass spectra of Cu I Br complexed with 2 equiv. of 4,4′‐di(5‐nonyl)‐2,2′‐bipyridine (dNbpy) in toluene, methyl acrylate or styrene showed the presence of [Cu I (dNbpy) 2 ] + cation and [Cu I Br 2 ] − anion. For the Cu II Br 2 /2dNbpy system, [Cu II (dNbpy) 2 Br] + , [Cu II (dNbpy)Br] + , [Cu I Br 2 ] − , [Cu II Br 3 ] − and [Cu II (dNbpy)Br 3 ] − species were observed. In addition, for mixed Cu I Br/2dNbpy and Cu II Br 2 /2dNbpy systems, the negative ion mode showed only the presence of [Cu I Br 2 ] − anions, which are potentially formed through halogen exchange between [Cu II Br 3 ] − and [Cu I (dNbpy) 2 ] + . Copyright © 2000 John Wiley & Sons, Ltd.