NDLI: Reanalysis of the Aqueous Spectrum of the Neptunyl(V) [NpO2(+)] Ion.

Content Provider	World Health Organization (WHO)-Global Index Medicus
Author	Edelstein, Norman M.
Description	Author Affiliation: Edelstein NM ( Chemical Sciences Division, MS 70A-1150, Lawrence Berkeley National Laboratory , Berkeley, California 94720, United States.)
Abstract	The actinyl ions, consisting of the dioxoactinde(VI) and dioxoactinide(V) ions, are unique in the periodic table. However, very few quantitative studies of the spectra of these ions have been performed. In this paper the analysis of the optical spectrum of the aqueous neptunyl(V) [NpO2(+)] ion in 1 M HClO4 is reexamined. The species in solution is assumed to be the linear NpO2(+) ion surrounded in the equatorial plane by five oxygen atoms from five H2O molecules. The neptunyl(V) ion has the 5f(2) open-shell configuration, and the low-lying optical transitions (up to â ¼20â ¯000 cm(-1)) observed are primarily from the two 5f electrons occupying the 5fφ and 5fÎ´ orbitals. The conventional parametric theory used for f(n) systems is applied to these low-lying transitions utilizing the intensity calculations that Matiska et al.1 have performed for this ion and the data reported by Eisenstein and Pryce.2 Possible ratios for the Slater electrostatic repulsion parameters are obtained from the data for the isoelectronic ion U(4+) (5f(2)) in various host crystals. The results are consistent with earlier crystal field analyses of the 5f(1) neptunyl(VI) [NpO2(2+)] ion.
ISSN	10895639
Issue Number	45
Journal	The Journal of Physical Chemistry A
Volume Number	119
e-ISSN	15205215
Language	English
Publisher	American Chemical Society (United States)
Publisher Date	2015-11-12
Publisher Place	United States
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	Physical chemistry
Content Type	Text
Resource Type	Article
Subject	Medicine Physical and Theoretical Chemistry

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