Gas phase ligation kinetics of metal monocations with pyrene

Kazazić, Saša; Kazazić, Snježana; Klasinc, Leo; Rožman, Marko; Srzić, Dunja (2005) Gas phase ligation kinetics of metal monocations with pyrene. Croatica Chemica Acta, 78 (2). pp. 269-274. ISSN 0011-1643

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Abstract

The gas-phase ligation of M+ ions with pyrene is reviewed. The M+ (M = Al, K, V, Cr, Fe, Co, Ni, Cu, Nb, Mo, Ru, Ag, Sn, Ta, W, Re, Pt, An, Hg, Pb, Bi and U) were produced by a single laser shot. Gaseous pyrene was already present in the Fourier transform mass spectrometer (FTMS). The reaction proceeded by consecutive ligations, sometimes accompanied by expulsion of a part (usually H-2) of the ligand. Charge transfer (when the neutral metal has a higher ionization energy than the pyrene), pyrene dimerization, oxidation by residual oxygen, and protonation by ubiquitous water in the instrument may also take place. Reaction progression was followed by varying the delay time between the shot and the mass-spectrometric assay of the ions. If electronically-excited M+, which might have been produced by the laser pulse, was interfering with the reaction, these ions and their products were swept out of the FTMS chamber prior to initiation of the time delay specified above.

Item Type:	Article
Uncontrolled Keywords:	ligation reaction; charge exchange reaction; gas phase kinetics; metal monocations; pyrene; transform mass-spectrometry; h-bond activation; ion chemistry; organometallic chemistry; nb+; benzene; fe+; hexafluorobenzene; complexes; cations
Subjects:	NATURAL SCIENCES > Chemistry
Divisions:	Division of Physical Chemistry
Projects:	Project title Project leader Project code Project type Reaktivnost i reakcijski mehanizmi Dunja Srzić 0098032 MZOS
Depositing User:	Dunja Srzić
Date Deposited:	06 Nov 2013 12:01
URI:	http://fulir.irb.hr/id/eprint/897

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