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Electrospray ionization mass spectrometry studies of rhenium(I) bipyridyl complexes
2004 (English)In: European journal of mass spectrometry, ISSN 1469-0667, Vol. 10, no 5, 599-603 p.Article in journal (Refereed) Published
Abstract [en]

Electrospray ionization mass spectrometry has been employed to study the formation of fragment ions from a series of rhenium(I) bipyridyl complexes [(4,4'-di-(COOEt)(2)-bpy) Re(CO)(3)XPyPF6], where bpy is 2,2'-bipyridine, Py is pyridine and X is H, 4-methyl, 3-methyl, 4-hydroxyl, 3-hydroxyl, 4-amino, or 3-amino of the pyridine ligand. The effects of substituents (X) on the stability of the complexes has been investigated with the increase of fragmentor voltages. For different X substitutents, the stability of the complexes increases as X becomes more electron-donating from H to CH3, OH and NH2. For the same substitutent, the p-substituted pyridines have a stronger stabilizing effect than the corresponding m-substituted ones. Ligand exchange reaction was found in acetonitrile, where the pyridine ligand has been replaced by the solvent, indicated by the formation of [M - PF6 - XPy + MeCN](+) in the fragmentation.

Place, publisher, year, edition, pages
2004. Vol. 10, no 5, 599-603 p.
Keyword [en]
electrospray ionization mass spectrometry (ESI-MS), rhenium(I) bipyridyl complexes, in-source CID, ligand exchange, electrondonating group, solar cell, tio2
URN: urn:nbn:se:kth:diva-23937ISI: 000225535100004OAI: diva2:342636
QC 20100525Available from: 2010-08-10 Created: 2010-08-10Bibliographically approved

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