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

Samantha K. Cary; Mark A. Silver; Guokui Liu; Jamie C. Wang; Justin A. Bogart; Jared T. Stritzinger; Alexandra A. Arico; Kenneth Hanson; Eric J. Schelter; Thomas E. Albrecht-Schmitt

doi:10.1021/acs.inorgchem.5b02052

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

Samantha K. Cary, Mark A. Silver, Guokui Liu, Jamie C. Wang, Justin A. Bogart, Jared T. Stritzinger, Alexandra A. Arico, Kenneth Hanson, Eric J. Schelter, Thomas E. Albrecht-Schmitt

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33 Scopus citations

Abstract

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.

Original language	English
Pages (from-to)	11399-11404
Number of pages	6
Journal	Inorganic Chemistry
Volume	54
Issue number	23
DOIs	https://doi.org/10.1021/acs.inorgchem.5b02052
State	Published - Nov 12 2015
Externally published	Yes

Funding

Funders	Funder number
Office of Science
U.S. Department of Energy	DE-SC0006518, DE-FG02-13ER16414

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10.1021/acs.inorgchem.5b02052

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Cary, S. K., Silver, M. A., Liu, G., Wang, J. C., Bogart, J. A., Stritzinger, J. T., Arico, A. A., Hanson, K., Schelter, E. J., & Albrecht-Schmitt, T. E. (2015). Spontaneous Partitioning of Californium from Curium: Curious Cases from the Crystallization of Curium Coordination Complexes. Inorganic Chemistry, 54(23), 11399-11404. https://doi.org/10.1021/acs.inorgchem.5b02052

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title = "Spontaneous Partitioning of Californium from Curium: Curious Cases from the Crystallization of Curium Coordination Complexes",

abstract = "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.",

author = "Cary, {Samantha K.} and Silver, {Mark A.} and Guokui Liu and Wang, {Jamie C.} and Bogart, {Justin A.} and Stritzinger, {Jared T.} and Arico, {Alexandra A.} and Kenneth Hanson and Schelter, {Eric J.} and Albrecht-Schmitt, {Thomas E.}",

note = "Publisher Copyright: {\textcopyright} 2015 American Chemical Society.",

year = "2015",

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doi = "10.1021/acs.inorgchem.5b02052",

language = "English",

volume = "54",

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journal = "Inorganic Chemistry",

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T1 - Spontaneous Partitioning of Californium from Curium

T2 - Curious Cases from the Crystallization of Curium Coordination Complexes

AU - Cary, Samantha K.

AU - Silver, Mark A.

AU - Liu, Guokui

AU - Wang, Jamie C.

AU - Bogart, Justin A.

AU - Stritzinger, Jared T.

AU - Arico, Alexandra A.

AU - Hanson, Kenneth

AU - Schelter, Eric J.

AU - Albrecht-Schmitt, Thomas E.

PY - 2015/11/12

Y1 - 2015/11/12

N2 - 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.

AB - 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.

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

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