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Title: Spontaneous Partitioning of Californium from Curium: Curious Cases from the Crystallization of Curium Coordination Complexes

Journal Article · · Inorganic Chemistry
 [1];  [1];  [2];  [1];  [3];  [1];  [1];  [1];  [3];  [1]
  1. Department of Chemistry and Biochemistry, Florida State University, Tallahassee, Florida 32306, United States
  2. Chemical Sciences and Engineering Division, Argonne National Laboratory, Argonne, Illinois 60439, United States
  3. P. Roy and Diana T. Vagelos Laboratories, Department of Chemistry, University of Pennsylvania, 231 South 34th Street, Philadelphia, Pennsylvania 19104, United States

The reaction of 248CmCl3 with excess 2,6-pyridinedicarboxylic acid (DPA) under mild solvothermal conditions results in crystallization of the tris-chelate complex Cm(HDPA)3·H2O. Approximately half of the curium remains in solution at the end of this process, and evaporation of the mother liquor results in crystallization of the bis-chelate complex [Cm(HDPA)- (H2DPA)(H2O)2Cl]Cl·2H2O. 248Cm is the daughter of the α decay of 252Cf and is extracted in high purity from this parent. However, trace amounts of 249,250,251Cf are still present in all samples of 248Cm. During the crystallization of Cm(HDPA)3·H2O and [Cm(HDPA)(H2DPA)(H2O)2Cl]Cl·2H2O, californium(III) spontaneously separates itself from the curium complexes and is found doped within crystals of DPA in the form of Cf(HDPA)3. These results add to the growing body of evidence that the chemistry of californium is fundamentally different from that of earlier actinides.

Research Organization:
Argonne National Lab. (ANL), Argonne, IL (United States)
Sponsoring Organization:
USDOE Office of Science (SC), Basic Energy Sciences (BES)
Grant/Contract Number:
FG02-13ER16414; SC0010677
OSTI ID:
1404756
Alternate ID(s):
OSTI ID: 1239311
Journal Information:
Inorganic Chemistry, Journal Name: Inorganic Chemistry Vol. 54 Journal Issue: 23; ISSN 0020-1669
Publisher:
American Chemical Society (ACS)Copyright Statement
Country of Publication:
United States
Language:
English
Citation Metrics:
Cited by: 25 works
Citation information provided by
Web of Science

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  • Sturzbecher-Hoehne, Manuel; Goujon, Christophe; Deblonde, Gauthier J. -P.
  • Journal of the American Chemical Society, Vol. 135, Issue 7 https://doi.org/10.1021/ja310957f
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