Electrospray Ionization Mass Spectrometry of Palladium(II) Quinolinylaminophosphonate Complexes (Articolo in rivista)

Type
Label
  • Electrospray Ionization Mass Spectrometry of Palladium(II) Quinolinylaminophosphonate Complexes (Articolo in rivista) (literal)
Anno
  • 2011-01-01T00:00:00+01:00 (literal)
Alternative label
  • Juribasic, M; Bellotto, L; Traldi, P; Tusek-Bozic, L (2011)
    Electrospray Ionization Mass Spectrometry of Palladium(II) Quinolinylaminophosphonate Complexes
    in Journal of the American Society for Mass Spectrometry
    (literal)
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  • Juribasic, M; Bellotto, L; Traldi, P; Tusek-Bozic, L (literal)
Pagina inizio
  • 1815 (literal)
Pagina fine
  • 1825 (literal)
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  • DOI: 10.1007/s13361-011-0186-9 (literal)
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  • 22 (literal)
Rivista
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  • pubblicazione scientifica (literal)
Note
  • ISI Web of Science (WOS) (literal)
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  • 1. Rudjer Boskovic Inst, Div Phys Chem, Zagreb (Croatia) 2. CNR-ISTM, Padova (Italy) (literal)
Titolo
  • Electrospray Ionization Mass Spectrometry of Palladium(II) Quinolinylaminophosphonate Complexes (literal)
Abstract
  • The mass spectrometric behavior of palladium(II) halide complexes of three types of quinolinylaminophosphonates, diethyl and dibutyl esters of [alpha-anilino-(quinolin-2-yl)methyl]phosphonic (L1, L2), [alpha-anilino-(quinolin-3-yl)methyl]phosphonic (L3, L4), and [alpha-(quinolin-3-ylamino)-N-benzyl]phosphonic acid (L5, L6), was investigated under positive ion electrospray ionization conditions. Each type of ligand forms complexes with different metal-ligand interactions. Mononuclear dihalide adducts cis-[Pd(L1/L2)X(2)] (1-4) and trans-[Pd(L3/L4)(2)X(2)] (5-8) as well as dinuclear tetrahalide complexes [Pd(2)(L5/L6)(3)X(4)] (9-12) (X = Cl, Br) are formed by metal bonding either through the quinoline or both the quinoline and amino nitrogen atoms. The sodiated molecule [M + Na](+) is observed in the mass spectra of all the complexes, and its abundance as well as the fragmentation pathway depend on the type of the complex. In the cis complexes (1-4) the initial decomposition goes under two fragmentation routes: those in which the sodium molecular adduct sequentially loses halides HX/NaX and those in which this loss is in the competition with the loss of dialkyl phosphite. The predominant pathways for decomposition of trans dihalide (5-8) and tetrahalide (9-12) complexes include three competitive reactions; the loss of halides, dialkyl phosphites and the intact phosphonate ligand molecule and its fragments formed by ester dissociation or complete loss of the phosphonate ester moiety. A series of acetonitrile adducts and cluster ions derived from dimolecular clusters [2M + Na](+) were also detected. The most important fragmentation patterns are rationalized and supported by the MS (n) studies (literal)
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