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Liquid injection field desorption/ionization of transition metal fluoride complexes

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JournalJOURNAL OF FLUORINE CHEMISTRY
DatePublished - Nov 2010
Issue number11
Volume131
Number of pages5
Pages (from-to)1213-1217
Original languageEnglish

Abstract

Metal fluoride complexes that are extremely sensitive to air and water have been characterized by liquid injection field desorption/Ionization (LIFDI) mass spectrometry Dilute solutions of fluoride complexes of nickel rhodium titanium zirconium and ruthenium in toluene and tetrahydrofuran were examined by LIFDI methods on a time-of-flight mass spectrometer All the spectra of nickel titanium and zirconium complexes exhibited the molecular ion as base peak The ruthenium and rhodium complexes showed [M-HF](+) as base peaks but the molecular ions were easily detected The nickel complexes do not provide useful mass spectra by El or ESI methods Only the titanium and zirconium species showed evidence of the fluoride ligands in the ESI spectra Two new nickel fluoride complexes are formed by C-F activation reactions with 2 3 5 6-tetrafluoro-4-dimethylaminopyridine and 2 3 5 6-tetrafluoro-4-methoxypyridine yielding trans-NiF{2-C5NF3(4-NMe2)}(PEt3)(2) and trans-NiF{2-C5NF3(4-OMe)}(PEt3)(2) respectively The crystal structure of trans-NiF{2-C5NF3(4-NMe2)}(PEt3)(2) shows typical square planar coordination at nickel with an Ni-F distance of 1 8521(9) A (C) 2010 Elsevier B V All rights reserved

    Research areas

  • Mass spectrometry, Metal fluoride, Nickel, Ruthenium, Rhodium, Titanium, Zirconium, NMR spectroscopy, C-F ACTIVATION, BOND ACTIVATION, DERIVATIVES, BIFLUORIDE, REACTIVITY, NICKEL(0), PENTAFLUOROPYRIDINE, TETRAFLUOROBENZENES, FLUOROPYRIDINES, SUBSTITUTION

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