Surprising coordination for low-valent actinides resembling uranyl(vi) in thorium(iv) organic hybrid layered and framework structures based on a graphene-like (6,3) sheet topology.

  title={Surprising coordination for low-valent actinides resembling uranyl(vi) in thorium(iv) organic hybrid layered and framework structures based on a graphene-like (6,3) sheet topology.},
  author={Yuxiang Li and Zhehui Weng and Yanlong Wang and Lanhua Chen and Daopeng Sheng and Juan Diwu and Zhifang Chai and Thomas E. Albrecht‐Schmitt and Shuao Wang},
  journal={Dalton transactions},
  volume={45 3},
Three thorium(iv)-based metal-organic hybrid compounds with 2D layered and 3D framework structures exhibiting graphene-like (6,3) sheet topologies were prepared with linkers with threefold symmetry. These compounds contain rare and relatively anisotropic coordination environments for low-valent actinides that are similar to those often observed for high-valent actinide ions. 
18 Citations

Employing an Unsaturated Th4+ Site in a Porous Thorium-Organic Framework for Kr/Xe Uptake and Separation.

3D thorium-organic framework SCU-11 contains a series of cages with an effective size of ca.

Unique Eu(II) Coordination Environments with a Janus Cryptand.

Experimental results show that the decreased Lewis basicity of the aromatic face hypsochromically shifts absorbances and emissions from a structurally related compound without the benzo groups.

Beyond structural motifs: the frontier of actinide-containing metal–organic frameworks†

This discussion delves into the remarkable potential of An-MOFs for evolving the nuclear waste administration sector and features recent advances in the field of actinide-containing metal–organic frameworks with a main focus on their electronic, catalytic, photophysical, and sorption properties.

Actinide-based MOFs: a middle ground in solution and solid-state structural motifs.

This review attempts to perform a comprehensive analysis of more than 100 crystal structures of the existing An (U,Th)-based MOFs to establish a correlation between structural density and wt% of actinide and bridge structural motifs common for natural minerals with ones typically observed in the solution chemistry ofActinides.

Synthesis of Coordination Polymers of Tetravalent Actinides (Uranium and Neptunium) with a Phthalate or Mellitate Ligand in an Aqueous Medium.

Four metal-organic coordination polymers bearing uranium or neptunium have been hydrothermally synthesized from a tetravalent actinide chloride and phthalic or mellitic acid in aqueous media at 130 °C to identify two distinct structures.

First Cationic Uranyl-Organic Framework with Anion-Exchange Capabilities.

By controlling the extent of hydrolysis during the self-assembly process of a zwitterionic-based ligand with uranyl cations, a structural evolution from the neutral uranyl-organic framework to the first cationic uranyl -organic framework with the formula of [(UO2)(HTTTPC)(OH)]Br·1.5DMF·4H2O (SCU-7).

A stable mixed-valent uranium(v,vi) organic framework as a fluorescence thermometer

The presence of stable U(V)-containing compounds is important for the study of radionuclides. However, pentavalent uranium is prone to disproportionation, thus U(V)-containing compounds are generally



Umbellate distortions of the uranyl coordination environment result in a stable and porous polycatenated framework that can effectively remove cesium from aqueous solutions.

Being equipped with the highest surface area among all actinide compounds known to date and completely exchangeable [(CH3)2NH2](+) cations in the structure, this material is able to selectively remove cesium from aqueous solutions while retaining the polycatenated framework structure.

Uranyl-peroxide interactions favor nanocluster self-assembly.

Clusters containing 20 uranyl pentagonal triperoxides have been isolated and characterized that assume the smallest possible fullerene topology consisting only of 12 pentagons, indicating that the U-O(2)-U dihedral angle is inherently bent.

[(Th2F5)(NC7H5O4)2(H2O)][NO3]: an actinide-organic open framework.

This work has claimed that thorium oxyfluoride chains connected to pyridinedicarboxylate groups to give a 3D cross-linked network with cavities containing nitrate anions, the first three-dimensionally connected, actinide-organic framework solid.

Synthesis, structure, and characterization of a new thorium-organic framework material, Th3F5[(C10H14)(CH2CO2)2]3(NO3).

A new three-dimensional cubic thorium-organic framework material, Th3F5[(C10H14)(CH2CO2)2]3(NO3) has been synthesized under mild hydrothermal reaction conditions using Th(NO3)4 x 6H2O,

Surprising coordination for plutonium in the first plutonium(III) borate.

The first plutonium(III) borate, Pu(2)[B(12)O(18)(OH)(4)Br(2)(H(2)O)(3)]·0.5H(2)O, has been prepared by reacting plutonium(III) with molten boric acid under strictly anaerobic conditions. This

Solid state structure of thorium(IV) complexes with common aminopolycarboxylate ligands.

The bridging (non-chelating) coordination mode of H(2)NTA(-) is a novel feature in this context and adds to the structural information available on their complexes with thorium(IV), which has mainly been obtained up to now by extended X-ray absorption fine structure (EXAFS) spectroscopy.

Stereochemistry of compounds with coordination number ten.

The stereochemistry of ten-coordinate rare-earth and transition-metal compounds is studied from the point of view of continuous shape measures (CShM) and derived tools and some ligand topologies are seen to consistently favor usually neglected ideal polyhedra, such as the capped trigonal cupola.

New neptunium(V) borates that exhibit the alexandrite effect.

A new neptunium(V) borate, K[(NpO(2))B(10)O(14)(OH)(4)], was synthesized using boric acid as a reactive flux, which possesses a layered structure in which Np(V), creating a hexagonal-bipyramidal environment around nept unium.

Recent progress in actinide borate chemistry.

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