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381
Neutron diffraction study of Ba6Mn4MO15 (M = Cu, Zn): Long-range magnetic order in pseudo-1D materials
Published 1999“…Ba6Mn4ZnO15 is isostructural with Ba6Ni5O15 and contains transition metals in chains of oxide polyhedra (trigonal prisms and octahedra); neighboring chains are separated from each other by the Ba atoms. …”
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382
"A" cation polarity control in ACuTe2O7 (A = Sr2+, Ba2+, or Pb2+).
Published 2011“…The layers are composed of corner-shared CuO(5), TeO(6), and TeO(4) polyhedra. The influence of the "A" cation on the polarity is described by bond valence concepts, including the bond strain index and global instability index. …”
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383
Structural transformations of mechanically induced top-down approach BaFe12O19 nanoparticles synthesized from high crystallinity bulk materials
Published 2017“…However, different magnetic behaviours predominated at different milling time, which strongly related to the defects, distorted polyhedra, and non-equilibrium amorphous layers of the material.…”
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384
Local symmetry distortion induced anomalous thermal conduction in thermoelectric layered oxyselenides
Published 2023-09-01“…In thermoelectric heteroanionic oxides, the anionic polyhedra are widely present, but their effect on thermal transport is rarely investigated. …”
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385
Pressure-induced evolution of stoichiometries and electronic structures of host–guest Na–B compounds
Published 2023-11-01“…Among the known borides, Na-rich Na9B stands out as the composition with the highest alkali-metal content, featuring vertex- and face-sharing BNa16 polyhedra. Notably, it exhibits electride characteristics and transforms into a superionic electride at 200 GPa and 2000 K, displaying unusual Na atomic diffusion behavior attributed to the modulation of the interstitial anion electrons. …”
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386
Co(II)-Based Metal-Organic Framework Derived CA-CoNiMn-CLDHs with Peroxidase-like Activity for Colorimetric Detection of Phenol
Published 2023-09-01“…MOF-derived nanozyme has attracted wide interest due to its hollow polyhedra structure and porous micro-nano frameworks. …”
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387
Crystal Structure Evolution of CaSiO<sub>3</sub> Polymorphs at Earth’s Mantle Pressures
Published 2021-06-01“…The deformations that lead to these transformations allow a volume increase ofthe bigger polyhedra, which might ease cation substitution in the structural sites of these phases. …”
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388
Controlling Chiral Self-Sorting in Truxene-Based Self-Assembled Cages
Published 2022-07-01“…Coordination driven self-assembly of achiral components, i.e., hexa-alkylated truxene ligands (L) with bis-metallic complexes (M<sub>2</sub>), afforded three chiral face-rotating stereoisomer polyhedra (M<sub>6</sub>L<sub>2</sub>). By tuning the length of the alkyl chains as well as the distance between both ligands facing each other in the self-assemblies (M<sub>6</sub>L<sub>2</sub>), one can control the diastereomeric distribution between the expected homo- and hetero-chiral structures.…”
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389
Influence of structural and thermal factors on phenoxazinone synthase activities catalysed by coordinatively saturated cobalt(III) octahedral complexes bearing diazene–disulfonamid...
Published 2020-06-01“…In this report, two new dianionic and synthetically obtained diazene–disulfonamide N⌃N⌃N chelators of the form RSO2–NH–Ph–N=N–Ph–NHSO2R (R $_2$ methyl for 1 and tolyl for 2) are coordinatively self-assembled around cobalt(III) centres in the presence or absence of co-ligands (acetate, bipyridine, 4-dimethylaminopyridine and/or water) to obtain four new and structurally analysed complexes [Co12][Et3NH], Co1$_2$OAc$=$bpy, Co1$_{\mathbf{2}}$OAc${\cdot }$bpy and Co2${\cdot }$dmap${\cdot }$w, which are all found to be octahedral cobalt(III) polyhedra, distorted to varying extents, by using Continuous Shape Measurement calculations. …”
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390
Alloying and strain hardening of high-entropy membrane storage nano and crystalline alloys
Published 2022-12-01“…The structures of membrane alloys based on Fe–Ni (arrangement of atoms in coordination polyhedra and interatomic distances between atoms), as well as the kinetics of hydrogen - diffusion and permeability have been studied. …”
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391
Electronic Structure Calculation of Cr<sup>3+</sup> and Fe<sup>3+</sup> in Phosphor Host Materials Based on Relaxed Structures by Molecular Dynamics Simulation
Published 2022-04-01“…The relaxed lattices obtained after MD indicated that the coordination polyhedra around Cr<sup>3+</sup> and Fe<sup>3+</sup> expanded in accordance with the size difference between the luminescent center ions and Al<sup>3+</sup> in the host crystals. …”
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392
Crystal Chemistry of an Erythrite-Köttigite Solid Solution (Co<sub>3–x</sub>Zn<sub>x</sub>) (AsO<sub>4</sub>)<sub>2</sub>·8H<sub>2</sub>O
Published 2020-06-01“…In response to Co ↔ Zn substitutions, small but significant changes in bond distances (particularly in [AsO<sub>4</sub>] tetrahedra), rotation, and distortion of co-ordination polyhedra were observed. Two sub-series of dominant cationic substitutions (Co-Mg-Ni and Co-Fe-Zn) were noted within the arsenate series of vivianite-group minerals linked by erythrite. …”
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393
M<sub>6</sub>O<sub>4</sub>(OH)<sub>4</sub> of M = Sn, Pb: Single Crystal Growth and Crystal Structure Determinations Far Away from Routine
Published 2023-04-01“…Structures of both molecules are analyzed with respect to the molecules as a whole as well as to their constructive building units: two crystallographic different prototypes of {MO<sub>4</sub>} coordination polyhedra with a bent seesaw conformation, one μ<sub>3</sub>-OH- and one μ<sub>3</sub>-O- group, each trigonal-pyramidally coordinated.…”
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394
Design of Metal-Organic Polymers MIL-53(M<sup>3+</sup>): Preparation and Characterization of MIL-53(Fe) and Graphene Oxide Composite
Published 2021-10-01“…For the first time, different coordination numbers (CN) (CNFe = 4.9 for MIL-53(Fe)—two types of coordination polyhedra with CNFe = 6 and CNFe = 4; CNFe = 4 for MIL-53 (Fe<sup>3+</sup>)/GO) and the formal charges (FC) of iron ions (variable FC of Fe <sup>(2+δ)+</sup> in MIL-53(Fe<sup>3+</sup>) and Fe<sup>2+</sup> in MIL-53(Fe<sup>3+</sup>)/GO) were found. …”
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395
Molecular characterization of genome segments 1 and 3 encoding two capsid proteins of <it>Antheraea mylitta </it>cytoplasmic polyhedrosis virus
Published 2010-08-01“…Immunoblot analysis of purified polyhedra, virion particles and virus infected mid-gut cells with the raised anti-p137 and anti-p141 antibodies showed specific immunoreactive bands and suggest that S1 and S3 may code for viral structural proteins. …”
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396
Three-dimensional covalent organic frameworks with pto and mhq-z topologies based on Tri- and tetratopic linkers
Published 2023-05-01“…The mhq-z net topology is solely constructed from totally face-enclosed organic polyhedra displaying a precise uniform micropore size of 1.0 nm. …”
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397
Dramatic Effect of A Ring Size of Alicyclic α-Dioximate Ligand Synthons on Kinetics of the Template Synthesis and of the Acidic Decomposition of the Methylboron-Capped Iron(II) Cla...
Published 2021-06-01“…The difference in the kinetic schemes of a formation of the boron-capped iron(II) tris-nioximates and tris-octoximates is explained by necessity of the substantial changes in a geometry of the latter ligand synthon, caused by its coordination to the iron(II) ion, due to both the higher distortion of the <i>FeN<sub>6</sub></i>-coordination polyhedra, and the intramolecular sterical clashes in the molecules of the macrobicyclic iron(II) tris-octoximates.…”
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398
Cd<sub>4</sub>InO(BO<sub>3</sub>)<sub>3</sub>: A New Nonlinear Optical Crystal Exhibiting Strong Second Harmonic Generation Effect and Moderate Birefringence
Published 2022-02-01“…Its structure contains the distorted InO<sub>6</sub> and CdO<sub>n</sub> (n = 6, 8) polyhedra, which link together by sharing an edge or corner to build a three dimensions framework with BO<sub>3</sub> triangles accommodated in tunnels. …”
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399
Sterical Self-Consistency of Carbonaceous Nanopolyhedra Triggered by Introduced CNTs to Optimize ORR Performance
Published 2023-09-01“…Herein, we have found that directly introducing CNT into MOF-derived carbonaceous nanopolyhedra, i.e., introduced carbon nanotubes (CNTs) penetrated porous nitrogen-doped carbon polyhedra (NCP) dotted with cobalt nanoparticles (denoted as CNTs-Co@NCP), can optimize the catalytic activity, stability, and methanol tolerance. …”
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400
Step-By-Step Modeling and Demetallation Experimental Study on the Porous Structure in Zeolites
Published 2022-11-01“…A new step-by-step model is proposed that explains the principles of organizing the hierarchy of microporous space at the stage of assembling zeolites from elements of minimal size: a primary building unit, secondary building units, tertiary building units or building polyhedra, a sodalite cage, and a supercage. To illustrate the stepwise hierarchical porous structure of nanomaterials, the following zeolites with small and large micropores have been selected as the model objects: sodalite (SOD, the maximum diameter of a sphere that can enter the pores is 0.3 nm) and zeolites of type A (LTA, the maximum diameter of a sphere that can enter the pores is 0.41 nm), type X, Y (FAU, the maximum diameter of a sphere that can enter the pores is 0.75 nm), and type BETA (the maximum diameter of a sphere that can enter the pores is 0.67 nm). …”
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