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A Spectrophotometric Study of Trivalent Actinide Complexes in Solution. IV. Americium with Chloride Ligands
Author(s) -
Marcus Y.,
Shiloh M.
Publication year - 1969
Publication title -
israel journal of chemistry
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.908
H-Index - 54
eISSN - 1869-5868
pISSN - 0021-2148
DOI - 10.1002/ijch.196900006
Subject(s) - chemistry , americium , aqueous solution , actinide , chloride , lanthanide , inorganic chemistry , amine gas treating , absorption spectroscopy , lithium chloride , diluent , europium , absorption (acoustics) , stability constants of complexes , nuclear chemistry , ion , organic chemistry , physics , quantum mechanics , acoustics
The light absorption spectra of americium(III) in ethanolic and concentrated aqueous lithium chloride solutions, and in long‐chain alkylammonium chloride solutions in aromatic diluents were obtained, as well as those of certain solid double salts and complexes. A strong 5f 6 → 5f 5 6d 1 transition was observed in the aqueous solutions at 235 nm (42,500 cm −1 ), and from the dependence of the intensity of this and the 503 nm (19,880 cm −1 ) band, on the effective chloride activity, the stability constants of the inner sphere complexes: AmCl 2+ , logβ 1 * = −2.21± 0.08, and AmCl 2 + , log β 2 * = −4.70 ± 0.08, were determined. The spectrum of the long‐chain amine extracts is comparable to that of solids of the composition AmCl 3 · 2N(C 4 H 9 ) 4 Cl · × LiCl, and the nature of the extracts and of this and similar solids is discussed.