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Mass spectra of complexes of 8‐quinolinol with trivalent metals (AL, Ga, In, Sc, Cr and Fe)
Author(s) -
Charalambous J.,
Frazer M. J.,
Lee R. K.,
Qureshi A. H.,
Taylor F. B.
Publication year - 1971
Publication title -
organic mass spectrometry
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.475
H-Index - 121
eISSN - 1096-9888
pISSN - 0030-493X
DOI - 10.1002/oms.1210051005
Subject(s) - chemistry , ion , metal , fragmentation (computing) , oxidation state , mass spectrum , mox fuel , metal ions in aqueous solution , inorganic chemistry , mass spectrometry , crystallography , analytical chemistry (journal) , nuclear chemistry , organic chemistry , chromatography , computer science , plutonium , operating system
The main fragmentation of the compounds MX 3‐n ox n (oxH=8‐quinolinol. n = 3; M=AL, Ga, In, Sc, Cr or Fe. n = 2; M=In or Fe; X=Cl or Br. InIox 2 . n = 1; M=AL, In or Fe; X= Cl or Br) involves loss of X and intact ox . radicals. The comparative abundances of the fragments are primarily related to the common oxidation states of the metals. For example, all the Mox 3 compounds show the ions [Mox 3 ] + and [Mox 2 ] + . The ions [Mox] + and [M] + are present when M=Ga, In, Cr or Fe but for the elements with only one oxidation state (Al or Sc) [M] + is absent and [Mox] + has only very low abundance. When M= Cr or Fe metal‐containing ions arising from loss of species such as CO, H 2 O, HX, C 2 H 2 , H and OH by fragmentation of the ox ligand are also present; this behaviour is rationalised in terms of the ability of these metals to undergo a unit change in oxidation state. When n=1 the ions [MXox 2 ] + and [Mox 2 ] + and when n= 2 the ions [MX 2 ox] + and [Mox 3 ] + are present; these ions arise by ionization and fragmentation of species formed by redistribution reactions in the mass spectrometer.