Complexes of lanthanide dithionates 2. Electrospray mass spectrometry of Ln(2)(S2O6)(3) and their Ph3PO complexes; the X-ray crystal structure of Pr-2(S2O6)(3)(Ph3PO)(6)(H2O)(6)

Citation
Awg. Platt et al., Complexes of lanthanide dithionates 2. Electrospray mass spectrometry of Ln(2)(S2O6)(3) and their Ph3PO complexes; the X-ray crystal structure of Pr-2(S2O6)(3)(Ph3PO)(6)(H2O)(6), INORG CHIM, 295(2), 1999, pp. 146-152
Citations number
10
Categorie Soggetti
Inorganic & Nuclear Chemistry
Journal title
INORGANICA CHIMICA ACTA
ISSN journal
00201693 → ACNP
Volume
295
Issue
2
Year of publication
1999
Pages
146 - 152
Database
ISI
SICI code
0020-1693(19991130)295:2<146:COLD2E>2.0.ZU;2-G
Abstract
The crystal structure of Pr-2(S2O6)(3)(Ph3PO)(6)(H2O)(6) (1), has been dete rmined and is compared with the previously reported Nd-2(S2O6)(3)(Ph3PO)(4) (H2O)(8) (2), and Nd-2(S2O6)(3). 14H(2)O (3). The steric congestion in the primary coordination sphere, evaluated by steric angle sum (SAS) calculatio ns, shows that all the complexes have SAS values within the expected range for the coordination number of the metal. The incorporation of extra Ph3PO in 1 is accommodated by a very long Pr-OH2 distance. The behaviour of lanth anide dithionates and their triphenylphosphine oxide complexes under electr ospray mass spectrometry conditions has been investigated. For Ln(2)(S2O6)( 3), the expected ions, Ln(S2O6)(+) and Ln(S2O6)(2)(-), and their methanol s olvates, are observed as weak signals. The relationship between these and t he major ions observed in the gas phase is discussed. The spectra of the tr iphenylphosphine oxide complexes show no lanthanide containing ions. (C) 19 99 Elsevier Science S.A. All rights reserved.