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Electrospray ionization mass spectrometry of organic–inorganic materials: identification and gas‐phase reactivity of functionalized octahedral rhenium(III) clusters
Author(s) -
Rondeau David,
Perruchas Sandrine,
Avarvari Narcis,
Batail Patrick,
Vékey Karoly
Publication year - 2005
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/jms.774
Subject(s) - chemistry , reactivity (psychology) , electrospray ionization , mass spectrometry , ligand (biochemistry) , dichloromethane , rhenium , mass spectrum , acetonitrile , electrospray , phosphine , cluster (spacecraft) , analytical chemistry (journal) , solvent , inorganic chemistry , chromatography , organic chemistry , alternative medicine , receptor , pathology , computer science , programming language , catalysis , medicine , biochemistry
Electrospray ionization mass spectrometry was used for the analysis of functionalized rhenium clusters such as [Re 6 Se 8 ( o ‐Me 2 TTFPPh 2 ) 6 ] 2+ ( 1 ), {Re 6 Se 8 [( o ‐Me 2 TTF) 2 PPh] 6 } 2+ ( 2 ) and [Re 6 Se 8 (MePPh 2 ) 6 ] 2+ ( 3 ). The high‐resolution mass spectra of the intact clusters, performed in dichloromethane, confirm the identification of the compounds by comparison with the theoretical isotopic distributions. Low‐resolution full‐scan mass spectra recorded at increasing desolvation cone voltage values allow the study of the intrinsic reactivity of ionic species. The survival yield curves illustrating the bimolecular reactivity of 1 and 2 suggest that a bisdimethyltetrathiafulvalene(phenyl)phosphine ligand increases the stability of the functionalized ML 6 2+ cluster 2 . In the case of the 3 , instead of loss of a neutral ligand, ligand exchange is observed either with traces of water present in dichloromethane or with acetonitrile used as solvent. Copyright © 2004 John Wiley & Sons, Ltd.