Facile routes to ThIV, UIV, and NpIV phosphites and phosphates

Eric M. Villa; Shuao Wang; Evgeny V. Alekseev; Wulf Depmeier; Thomas E. Albrecht-Schmitt

doi:10.1002/ejic.201100464

Facile routes to Th^IV, U^IV, and Np^IV phosphites and phosphates

Eric M. Villa, Shuao Wang, Evgeny V. Alekseev, Wulf Depmeier, Thomas E. Albrecht-Schmitt

Research output: Contribution to journal › Article › peer-review

21 Scopus citations

Abstract

Three actinide(IV) phosphites and a Np^IV phosphate, An ^IV(HPO₃)₂(H₂O)₂ (An = Th, U, Np) and Cs[Np(H_1.5PO₄)(PO₄)]₂, respectively, were synthesized using mild hydrothermal conditions. The first three phases are isotypic and were obtained using similar reaction conditions. Cs[Np(H_1.5PO₄)(PO₄)]₂ was synthesized using an analogous method to that of Np(HPO₃) ₂(H₂O)₂. However, this fourth phase is quite different in comparison to the other phases in both composition and structure. The structure of Cs[Np(H_1.5PO₄)(PO₄)] ₂ is constructed from double layers of neptunium(IV) phosphate with caesium cations in the interlayer region. In contrast, An(HPO₃) ₂(H₂O)₂ (An = Th, U, Np) form dense 3D networks. The actinide contraction is detected in variety of metrics obtained from single-crystal X-ray diffraction data. Changes in the oxidation state of the neptunium starting materials yield different products.

Original language	English (US)
Pages (from-to)	3749-3754
Number of pages	6
Journal	European Journal of Inorganic Chemistry
Issue number	25
DOIs	https://doi.org/10.1002/ejic.201100464
State	Published - Sep 1 2011
Externally published	Yes

All Science Journal Classification (ASJC) codes

Inorganic Chemistry

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title = "Facile routes to ThIV, UIV, and NpIV phosphites and phosphates",

abstract = "Three actinide(IV) phosphites and a NpIV phosphate, An IV(HPO3)2(H2O)2 (An = Th, U, Np) and Cs[Np(H1.5PO4)(PO4)]2, respectively, were synthesized using mild hydrothermal conditions. The first three phases are isotypic and were obtained using similar reaction conditions. Cs[Np(H1.5PO4)(PO4)]2 was synthesized using an analogous method to that of Np(HPO3) 2(H2O)2. However, this fourth phase is quite different in comparison to the other phases in both composition and structure. The structure of Cs[Np(H1.5PO4)(PO4)] 2 is constructed from double layers of neptunium(IV) phosphate with caesium cations in the interlayer region. In contrast, An(HPO3) 2(H2O)2 (An = Th, U, Np) form dense 3D networks. The actinide contraction is detected in variety of metrics obtained from single-crystal X-ray diffraction data. Changes in the oxidation state of the neptunium starting materials yield different products.",

author = "Villa, {Eric M.} and Shuao Wang and Alekseev, {Evgeny V.} and Wulf Depmeier and Albrecht-Schmitt, {Thomas E.}",

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doi = "10.1002/ejic.201100464",

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AU - Villa, Eric M.

AU - Wang, Shuao

AU - Alekseev, Evgeny V.

AU - Depmeier, Wulf

AU - Albrecht-Schmitt, Thomas E.

PY - 2011/9/1

Y1 - 2011/9/1

N2 - Three actinide(IV) phosphites and a NpIV phosphate, An IV(HPO3)2(H2O)2 (An = Th, U, Np) and Cs[Np(H1.5PO4)(PO4)]2, respectively, were synthesized using mild hydrothermal conditions. The first three phases are isotypic and were obtained using similar reaction conditions. Cs[Np(H1.5PO4)(PO4)]2 was synthesized using an analogous method to that of Np(HPO3) 2(H2O)2. However, this fourth phase is quite different in comparison to the other phases in both composition and structure. The structure of Cs[Np(H1.5PO4)(PO4)] 2 is constructed from double layers of neptunium(IV) phosphate with caesium cations in the interlayer region. In contrast, An(HPO3) 2(H2O)2 (An = Th, U, Np) form dense 3D networks. The actinide contraction is detected in variety of metrics obtained from single-crystal X-ray diffraction data. Changes in the oxidation state of the neptunium starting materials yield different products.

AB - Three actinide(IV) phosphites and a NpIV phosphate, An IV(HPO3)2(H2O)2 (An = Th, U, Np) and Cs[Np(H1.5PO4)(PO4)]2, respectively, were synthesized using mild hydrothermal conditions. The first three phases are isotypic and were obtained using similar reaction conditions. Cs[Np(H1.5PO4)(PO4)]2 was synthesized using an analogous method to that of Np(HPO3) 2(H2O)2. However, this fourth phase is quite different in comparison to the other phases in both composition and structure. The structure of Cs[Np(H1.5PO4)(PO4)] 2 is constructed from double layers of neptunium(IV) phosphate with caesium cations in the interlayer region. In contrast, An(HPO3) 2(H2O)2 (An = Th, U, Np) form dense 3D networks. The actinide contraction is detected in variety of metrics obtained from single-crystal X-ray diffraction data. Changes in the oxidation state of the neptunium starting materials yield different products.

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