Thermochemical properties of U(VI) hybrid materials containing uranyl tetrachloride anions

Christopher L. Cahill; Nicholas P. Deifel; Dana Reusser; Lei Zhang; Alexandra Navrotsky

doi:10.1016/j.jct.2017.05.009

Thermochemical properties of U(VI) hybrid materials containing uranyl tetrachloride anions

Christopher L. Cahill, Nicholas P. Deifel, Dana Reusser, Lei Zhang, Alexandra Navrotsky

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

2 Scopus citations

Abstract

The enthalpies of formation from simpler components of four hybrid materials bearing the [UO₂Cl₄]²⁻ anion have been measured and compared to that of Cs₂[(UO₂)Cl₄]. The hybrids contain protonated amines as charge balancing cations that form bifurcated H-bonding interactions with the chloro ligands of the anions. The structure of each material contains similar motifs and the driving force for the formation of the hybrids appears to be the enthalpy of organic cation formation (protonation). The hybrids are energetically much more stable than the corresponding cesium salt without a protonated organic cation.

Original language	English (US)
Pages (from-to)	66-70
Number of pages	5
Journal	Journal of Chemical Thermodynamics
Volume	114
DOIs	https://doi.org/10.1016/j.jct.2017.05.009
State	Published - Nov 2017
Externally published	Yes

Keywords

Hydrogen bonding
Reaction enthalpies
Uranyl hybrid materials

ASJC Scopus subject areas

Atomic and Molecular Physics, and Optics
Materials Science(all)
Physical and Theoretical Chemistry

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10.1016/j.jct.2017.05.009

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title = "Thermochemical properties of U(VI) hybrid materials containing uranyl tetrachloride anions",

abstract = "The enthalpies of formation from simpler components of four hybrid materials bearing the [UO2Cl4]2− anion have been measured and compared to that of Cs2[(UO2)Cl4]. The hybrids contain protonated amines as charge balancing cations that form bifurcated H-bonding interactions with the chloro ligands of the anions. The structure of each material contains similar motifs and the driving force for the formation of the hybrids appears to be the enthalpy of organic cation formation (protonation). The hybrids are energetically much more stable than the corresponding cesium salt without a protonated organic cation.",

keywords = "Hydrogen bonding, Reaction enthalpies, Uranyl hybrid materials",

author = "Cahill, {Christopher L.} and Deifel, {Nicholas P.} and Dana Reusser and Lei Zhang and Alexandra Navrotsky",

note = "Funding Information: This work was supported as part of the Materials Science of Actinides, an Energy Frontier Research Center, funded by the U.S. Department of Energy, Office of Basic Energy Science under Award Number DE-SC0001089. We thank Tae-Jin Park and Tatiana Shvareva for help with initial experiments at UC Davis, and Robert Surbella (GW) for assistance with figure preparation. Publisher Copyright: {\textcopyright} 2017 Elsevier Ltd",

year = "2017",

month = nov,

doi = "10.1016/j.jct.2017.05.009",

language = "English (US)",

volume = "114",

pages = "66--70",

journal = "Journal of Chemical Thermodynamics",

issn = "0021-9614",

publisher = "Academic Press Inc.",

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T1 - Thermochemical properties of U(VI) hybrid materials containing uranyl tetrachloride anions

AU - Cahill, Christopher L.

AU - Deifel, Nicholas P.

AU - Reusser, Dana

AU - Zhang, Lei

AU - Navrotsky, Alexandra

N1 - Funding Information: This work was supported as part of the Materials Science of Actinides, an Energy Frontier Research Center, funded by the U.S. Department of Energy, Office of Basic Energy Science under Award Number DE-SC0001089. We thank Tae-Jin Park and Tatiana Shvareva for help with initial experiments at UC Davis, and Robert Surbella (GW) for assistance with figure preparation. Publisher Copyright: © 2017 Elsevier Ltd

PY - 2017/11

Y1 - 2017/11

N2 - The enthalpies of formation from simpler components of four hybrid materials bearing the [UO2Cl4]2− anion have been measured and compared to that of Cs2[(UO2)Cl4]. The hybrids contain protonated amines as charge balancing cations that form bifurcated H-bonding interactions with the chloro ligands of the anions. The structure of each material contains similar motifs and the driving force for the formation of the hybrids appears to be the enthalpy of organic cation formation (protonation). The hybrids are energetically much more stable than the corresponding cesium salt without a protonated organic cation.

AB - The enthalpies of formation from simpler components of four hybrid materials bearing the [UO2Cl4]2− anion have been measured and compared to that of Cs2[(UO2)Cl4]. The hybrids contain protonated amines as charge balancing cations that form bifurcated H-bonding interactions with the chloro ligands of the anions. The structure of each material contains similar motifs and the driving force for the formation of the hybrids appears to be the enthalpy of organic cation formation (protonation). The hybrids are energetically much more stable than the corresponding cesium salt without a protonated organic cation.

KW - Hydrogen bonding

KW - Reaction enthalpies

KW - Uranyl hybrid materials

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SP - 66

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JO - Journal of Chemical Thermodynamics

JF - Journal of Chemical Thermodynamics

ER -

Thermochemical properties of U(VI) hybrid materials containing uranyl tetrachloride anions

Abstract

Keywords

ASJC Scopus subject areas

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