Gas phase electron attachment reactions and negative ion mass spectra of tris- and bis(N,N-diethyldithiocarbamato) metal complexes

The interaction of cytosine with AuCl4−, under electrospray ionization mass spectrometric conditions, is discussed. On the basis of respective full scan mass spectra and product ion spectra, obtained in positive and negative ion mode, it has been deduced that cytosine is very prone to form Au(I)-containing complexes. The complexes may be formed in the gas phase by decomposition of Au(III)-containing complexes and also in the electrospray ionization source as a result of the occurrence of redox process. It has also been found that the interaction of cytosine with Au+ is stronger than that with Cu+ or Ag+, although taking into account the electrostatic attraction, it is not expected.

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Alkyl substituent effects in cyclopentadienyl metal complexes: trends in gas-phase ionization and electron attachment energetics of alkylnickelocenes

Journal of the American Chemical Society ◽

10.1021/ja00052a051 ◽

1992 ◽

Vol 114 (26) ◽

pp. 10482-10485 ◽

Cited By ~ 10

Author(s):

David E. Richardson ◽

Matthew F. Ryan ◽

M. Nazrul I. Khan ◽

Kimberly A. Maxwell

Keyword(s):

Metal Complexes ◽

Gas Phase ◽

Substituent Effects ◽

Alkyl Substituent ◽

Electron Attachment ◽

Cyclopentadienyl Metal

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ChemInform Abstract: Free Energies of Electron Attachment to Tris(acetylacetonate) and Tris(hexafluoroacetylacetonate) Transition-Metal Complexes in the Gas Phase: Experimental Results and Ligand Field Analysis.

ChemInform ◽

10.1002/chin.199044043 ◽

1990 ◽

Vol 21 (44) ◽

Author(s):

P. SHARPE ◽

J. R. EYLER ◽

D. E. RICHARDSON

Keyword(s):

Transition Metal ◽

Metal Complexes ◽

Gas Phase ◽

Transition Metal Complexes ◽

Electron Attachment ◽

Experimental Results ◽

Field Analysis ◽

Ligand Field ◽

Free Energies

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Free energies of electron attachment to tris(acetylacetonate) and tris(hexafluoroacetylacetonate) transition-metal complexes in the gas phase: experimental results and ligand field analysis

Inorganic Chemistry ◽

10.1021/ic00340a014 ◽

1990 ◽

Vol 29 (15) ◽

pp. 2779-2787 ◽

Cited By ~ 10

Author(s):

Paul Sharpe ◽

John R. Eyler ◽

David E. Richardson

Keyword(s):

Transition Metal ◽

Metal Complexes ◽

Gas Phase ◽

Transition Metal Complexes ◽

Electron Attachment ◽

Experimental Results ◽

Field Analysis ◽

Ligand Field ◽

Free Energies

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Studies in Negative-Ion Mass Spectrometry. XII. Electron Attachment to a Series of Bis(1,1,1,5,5,5-hexafluoropentane-2,4-dionato)-metal Complexes

Australian Journal of Chemistry ◽

10.1071/ch9792405 ◽

1979 ◽

Vol 32 (11) ◽

pp. 2405 ◽

Cited By ~ 6

Author(s):

DR Dakternieks ◽

IW Fraser ◽

JL Garnett ◽

IK Gregor

Keyword(s):

Mass Spectra ◽

Electron Attachment ◽

Negative Ions ◽

Fragmentation Pathway ◽

Negative Ion ◽

Metal Fluoride ◽

Class A ◽

Negative Ion Mass Spectrometry ◽

Fragment Ions ◽

Rearrangement Processes

Results of electron-attachment reactions in the gas phase as well as negative-ion mass spectra are given for a series of bis(1,1,1,5,5,5-hexafluoropentane-2,4-dionato)metal(1) complexes, (ML2), with the divalent metals MgII, MnII, Co11, Nil1, Cu11 and ZnII. While molecular, [ML2]- or [ML2]-, and ligand, [L]-, ions are present in the negative-ion mass spectra, the lability of the ligand C-F and C-CF3 bonds enables rearrangement processes involving fluorine atom transfers to become significant in the decompositions of both molecular and fragment ions, particularly for the class (a) metals, for which significant yields of [MLF2] and [MLF] negative ions were obtained. Thus, the predominant fragmentation pathway for such metal-containing complexes, for which metastable peaks have been assigned, occurs in the sequence [ML2]- -(*) → (MLF2]- - (8) → [L]- or alternatively [ML2]- -(*) → (MLF2]- - (8) → [L]- with the latter fragmentation in these sequences involving the elimination of the divalent metal fluoride, MF2.

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