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Precisely carving of multi‐shelled manganese–cobalt oxide hollow dodecahedra (Co/Mn‐HD) with shell number up to three is achieved by a controlled calcination of the Mn‐doped zeolitic imidazolate framework ZIF‐67 precursor (Co/Mn‐ZIF). The unique multi‐shelled and polycrystalline structure not only provides a very large electrochemically active surface area (EASA), but also enhances the structural stability of the material. The residual C and N in the final structures might aid stability and increase their conductivity. When used in alkaline rechargeable battery, the triple‐shelled Co/Mn‐HD exhibits high electrochemical performance, reversible capacity (331.94 mAh g−1 at 1 Ag−1), rate performance (88 % of the capacity can be retained with a 20‐fold increase in current density), and cycling stability (96 % retention over 2000 cycles). [ABSTRACT FROM AUTHOR]

We report the crystal structure of a novel 60-subunit dodecahedral cage that results from self-assembly of a re-engineered version of a natural protein (PduA) from the Pdu microcompartment shell. Biophysical data illustrate the dependence of assembly on solution conditions, opening up new applications in microcompartment studies and nanotechnology. [ABSTRACT FROM AUTHOR]

By fusing Lu2O3 and TeO2 in a molar ratio of 1:3 in a CsCl flux, colorless single crystals of the lutetium(III) oxotellurate(IV) Lu2Te3O9 could be obtained as first representative of the structurally so far unknown C-type for the composition M2Te3O9. The title compound crystallizes triclinically in space group P $\bar{1}$ with a = 689.67(4) pm, b = 1320.91(8) pm, c = 1450.06(9) pm, α = 110.057(3)°, β = 90.606(3)°, γ = 100.125(3)°, and Z = 6. The crystal structure contains six different Lu3+ cations in eightfold (Lu1 and Lu2: trigonal dodecahedra) and sevenfold (Lu3 and Lu6: monocapped trigonal prisms; Lu4 and Lu5: pentagonal bipyramids) oxygen coordination. These lutetium-oxygen polyhedra ( d(Lu-O) = 214-274 pm) are condensed to serrated layers according to 2∞{[Lu6O26]34-} that are stacked along [100]. The oxotellurate(IV) partial structure consists of basically nine crystallographically independent [TeO3]2- ( d(Te-O) = 184-196 pm) units connecting the above-mentioned layers to a three-dimensional framework. Strong secondary Te4+ ···O2- interactions between adjacent [TeO3]2- entities as common feature in the crystal structures of all known ternary lanthanoid(III) oxotellurates(IV) are also present in the crystal structure of Lu2Te3O9. Depending upon the range of these secondary contacts taken into account, the [TeO3]2- units are linked to form one-dimensional strands ( d(Te ···O) = 237-272 pm) like in B-type Dy2Te3O9 or even two-dimensional layers emerge ( d(Te ···O) = 237-285 pm). [ABSTRACT FROM AUTHOR]

By fusing Lu2O3 and TeO2 in a molar ratio of 1:3 in a CsCl flux, colorless single crystals of the lutetium(III) oxotellurate(IV) Lu2Te3O9 could be obtained as first representative of the structurally so far unknown C-type for the composition M2Te3O9. The title compound crystallizes triclinically in space group P $\bar{1}$ with a = 689.67(4) pm, b = 1320.91(8) pm, c = 1450.06(9) pm, α = 110.057(3)°, β = 90.606(3)°, γ = 100.125(3)°, and Z = 6. The crystal structure contains six different Lu3+ cations in eightfold (Lu1 and Lu2: trigonal dodecahedra) and sevenfold (Lu3 and Lu6: monocapped trigonal prisms; Lu4 and Lu5: pentagonal bipyramids) oxygen coordination. These lutetium-oxygen polyhedra ( d(Lu-O) = 214-274 pm) are condensed to serrated layers according to 2∞{[Lu6O26]34-} that are stacked along [100]. The oxotellurate(IV) partial structure consists of basically nine crystallographically independent [TeO3]2- ( d(Te-O) = 184-196 pm) units connecting the above-mentioned layers to a three-dimensional framework. Strong secondary Te4+ ···O2- interactions between adjacent [TeO3]2- entities as common feature in the crystal structures of all known ternary lanthanoid(III) oxotellurates(IV) are also present in the crystal structure of Lu2Te3O9. Depending upon the range of these secondary contacts taken into account, the [TeO3]2- units are linked to form one-dimensional strands ( d(Te ···O) = 237-272 pm) like in B-type Dy2Te3O9 or even two-dimensional layers emerge ( d(Te ···O) = 237-285 pm). [ABSTRACT FROM AUTHOR]

Platonic noble metal nanocrystals (NCs) have attracted considerate attention due to their symmetry, aesthetic beauty, and potential applications in catalysis, plasmonics, sensing, and spectroscopy. Although Platonic noble metal NCs with tetrahedral, cubic, octahedral, and icosahedral geometries have been chemically synthesized, the growth of Platonic dodecahedral noble metal NCs remains elusive. Here we propose a crystal structure of Platonic dodecahedral noble metal NCs and show that via a tailored seed-mediated synthetic approach, Platonic dodecahedral Au NCs can be grown from icosahedral multiply twinned Au seeds. By systematically tuning the ratio between {111} and {110} facets grown on the icosahedral Au seeds, NCs with icosahedral, icosidodecahedral, and dodecahedral shapes can be obtained. These shapes represent a family of Au NCs with icosahedral (Ih) symmetry. [ABSTRACT FROM AUTHOR]