NDTB‐1: A Supertetrahedral Cationic Framework That Removes TcO<sub>4</sub><sup>−</sup> from Solution

Wang, Shuao; Alekseev, Evgeny V.; Diwu, Juan; Casey, William H.; Phillips, Brian L.; Depmeier, Wulf; Albrecht‐Schmitt, Thomas E.

doi:10.1002/anie.200906397

Cited by 249 publications

(170 citation statements)

References 20 publications

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“…Another polymorphic modification of U(PO 3 ) 4 was obtained along with the orthorhombic phase by a reaction of orthophosphoric acid with uranyl nitrate at 400-600°C. This polymorph has the triclinic unit cell parameters a = 15.430 (15), b = 8.147 (6), c = 8.734(8) Å, α = 117.64(7), β = 112.59 (5), and γ = 89.08(5)°and was reported by Masse and Grenier together with the isostructural Th(PO 3 ) 4 . [16] Linde et al [17] described the crystal structure of U(PO 3 ) 4 …”

Section: Introductionmentioning

confidence: 75%

“…[4][5][6][7][8][9] One of the most common uranium minerals, autunite Ca(UO 2 ) 2 (PO 4 ) 2 ·11H 2 O, [10] occurs in the contaminated soils of Fernald Site in Ohio, USA, a former uranium reprocessing plant at which tributyl phosphate was used as an extraction reagent. [11] In addition to the autunite group compounds (with U 6+ ions), which contained about 31 % of the total U present, U 4+ metaphosphates represented approximately 20 % of the U.…”

Section: Introductionmentioning

confidence: 99%

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Further Insight into Uranium and Thorium Metaphosphate Chemistry and the Effect of Nd³⁺ Incorporation into Uranium(IV) Metaphosphate

Klepov

Neumeier

et al. 2015

Eur J Inorg Chem

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Section: Introductionmentioning

confidence: 75%

Section: Introductionmentioning

confidence: 99%

Further Insight into Uranium and Thorium Metaphosphate Chemistry and the Effect of Nd³⁺ Incorporation into Uranium(IV) Metaphosphate

Klepov

Neumeier

et al. 2015

Eur J Inorg Chem

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“…This compound was thought to be Th 3 (BO 3 ) 4 , but the evidence for this is not convincing. 38 We made use of the molten boric acid flux to synthesize the NDTB-1 20 One of the most important aspects of this compound is that its 3D-framework possesses a positive charge with extra framework H 2 BO 3 À anions residing within channels of the framework to balance the charge. This is interesting, since materials with extended structures are typically based on anionic networks where the charge is balanced by cations that fill the space between the anionic portions of the structure.…”

Section: Thorium Boratementioning

confidence: 99%

Recent progress in actinide borate chemistry

et al. 2011

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The use of molten boric acid as a reactive flux for synthesizing actinide borates has been developed in the past two years providing access to a remarkable array of exotic materials with both unusual structures and unprecedented properties.[ThB 5 O 6 (OH) 6 ][BO(OH) 2 ]Á2.5H 2 O possesses a cationic supertetrahedral structure and displays remarkable anion exchange properties with high selectivity for TcO 4 À . Uranyl borates form noncentrosymmetric structures with extraordinarily rich topological relationships. Neptunium borates are often mixed-valent and yield rare examples of compounds with one metal in three different oxidation states. Plutonium borates display new coordination chemistry for trivalent actinides. Finally, americium borates show a dramatic departure from plutonium borates, and there are scant examples of families of actinides compounds that extend past plutonium to examine the bonding of later actinides. There are several grand challenges that this work addresses. The foremost of these challenges is the development of structure-property relationships in transuranium materials. A deep understanding of the materials chemistry of actinides will likely lead to the development of advanced waste forms for radionuclides present in nuclear waste that prevent their transport in the environment. This work may have also uncovered the solubility-limiting phases of actinides in some repositories, and allows for measurements on the stability of these materials.

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“…[1][2][3][4][5][6][7][8] Because anions regulate a variety of physiological processes, they are potential toxins. As examples, perchlorate ion can adversely affect human health by interfering with iodide uptake into the thyroid, [9][10][11] and chromate (CrO 4 2-) is toxic, mutagenic, and a human carcinogen.…”

Section: Introductionmentioning

confidence: 99%

Immobilization, Trapping, and Anion Exchange of Perrhenate Ion Using Copper-Based Tripodal Complexes

2011

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Abstract:We describe a multidentate tripodal ligand in which three pendant arms carrying di(2-picolyl)amine units are linked to the ortho-positions of a tris (o-xylyl) scaffold, providing N(CH 2 -o-C 6 H 4 -CH 2 N(CH 2 py) 2 ) 3 (L). Reaction of L with CuCl 2 in the presence of hexafluorophosphate anion afforded blue cubes of [(CuCl) 3 L](PF 6 ) 3 ⋅5H 2 O (1). Crystallographic studies of 1 revealed that the three symmetry-related arms each coordinate a {Cu II Cl} unit, and two molecules of 1 are connected to one another through a Cu(µ-Cl) 2 Cu bridge, extending the molecular structure to form a two-dimensional layer.These 2-D layers pack in an ABCABC… fashion with PF 6 -anions located in between.Reaction of 1 with a stoichiometric amount of perrhenate ion afforded blue plates ofCompound 2 has the same lattice structure of 1, but the tricopper unit backbone now traps one ReO 4 -anion through Coulombic interactions.In addition, three molecules of 2 are bridged by a perrhenate ion forming a Cu 3 (µ 3 -ReO 4 )cluster to give a different 2-D structure, displaying a rare tridentate bridging ReO 4 -mode.Thus in addition to classic perrhenate trapping through weak Coulombic interactions, 2 represents an exceptional example in which the ReO 4 -anion is immobilized in an extended framework through tight covalent interactions. The interlamellar PF 6 -anions in 1 can be exchanged with other anions including perrhenate, perchlorate, or periodate. The structural similarity between perrhenate and pertechnetate makes these materials of potential interest for pertechnetate trapping.3

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NDTB‐1: A Supertetrahedral Cationic Framework That Removes TcO₄⁻ from Solution

Cited by 249 publications

References 20 publications

Further Insight into Uranium and Thorium Metaphosphate Chemistry and the Effect of Nd³⁺ Incorporation into Uranium(IV) Metaphosphate

Further Insight into Uranium and Thorium Metaphosphate Chemistry and the Effect of Nd³⁺ Incorporation into Uranium(IV) Metaphosphate

Recent progress in actinide borate chemistry

Immobilization, Trapping, and Anion Exchange of Perrhenate Ion Using Copper-Based Tripodal Complexes

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NDTB‐1: A Supertetrahedral Cationic Framework That Removes TcO4− from Solution

Cited by 249 publications

References 20 publications

Further Insight into Uranium and Thorium Metaphosphate Chemistry and the Effect of Nd3+ Incorporation into Uranium(IV) Metaphosphate

Further Insight into Uranium and Thorium Metaphosphate Chemistry and the Effect of Nd3+ Incorporation into Uranium(IV) Metaphosphate

Recent progress in actinide borate chemistry

Immobilization, Trapping, and Anion Exchange of Perrhenate Ion Using Copper-Based Tripodal Complexes

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Product

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NDTB‐1: A Supertetrahedral Cationic Framework That Removes TcO₄⁻ from Solution

Further Insight into Uranium and Thorium Metaphosphate Chemistry and the Effect of Nd³⁺ Incorporation into Uranium(IV) Metaphosphate

Further Insight into Uranium and Thorium Metaphosphate Chemistry and the Effect of Nd³⁺ Incorporation into Uranium(IV) Metaphosphate