Binuclear ruthenium(II) complexes with polypyridil bridging ligands: Gas-phase chemistry and ligand structure
authors Santana-Marquesa, MG; Madureira, J; Santos, TM; Felix, V
nationality International
journal INTERNATIONAL JOURNAL OF MASS SPECTROMETRY
author keywords Binuclear ruthenium complexes; Bridging ligands; Tetrazines; Gas-phase chemistry
keywords QUADRUPOLE ION-TRAP; ELECTROSPRAY MASS-SPECTROMETRY; DONOR LIGANDS; DISSOCIATION; SYSTEMS; ELECTROCHEMISTRY; IONIZATION; CELL
abstract Ru(II) binuclear complexes with the general formula [(Ru[9]aneS(3)Cl)(2)(mu L)](PF6)(2), where mu L = 3,6-bis(2-pyridyl)-1,2,4,5-tetrazine (bptz), 2.3-bis(2-pyridyl)pyrazine (dpp), and 2,2'-bipyrimidine (bpym), have been studied by electrospray mass spectrometry (ESI/MS) and electrospray mass spectrometry/mass spectrometry (ESI/MS/MS), in the positive ion mode, to investigate their fragmentation patterns in relation to their structural and spectroscopic properties and also to find out the differences with the gas-phase fragmentations patterns of their mononuclear counterparts. We observed that the presence of two connected metal centres leads to the formation of specific ionic species, in particular, for the compound with bptz, gas-phase formation of fluoride anion adducts. These species can be related to the electronic structure of the bptz compound, in particular to its LUMOs (lowest unoccupied molecular orbitals) that lye low than the LUMOs of the other two compounds. (C) 2008 Elsevier B.V. All rights reserved.
publisher ELSEVIER SCIENCE BV
issn 1387-3806
year published 2008
volume 278
issue 1
beginning page 20
ending page 25
digital object identifier (doi) 10.1016/j.ijms.2008.07.005
web of science category Physics, Atomic, Molecular & Chemical; Spectroscopy
subject category Physics; Spectroscopy
unique article identifier WOS:000260953100004
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