Isothermal section of the Ce–Au–Sb system at 870K

Salamakha, Leonid; Bauer, E.; Mudry, S.; Gonçalves, A.P.; Almeida, Manuel; Noël, H.

doi:10.1016/j.jallcom.2008.12.127

Cited by 16 publications

(10 citation statements)

References 16 publications

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“…These voids accommodate Au 2 dumbbells with an Au–Au distance of 3.034(1) Å. Although this distance is longer than the shortest contact in elemental Au ( d Au–Au = 2.88 Å 69 ), it is in good agreement with the values reported for other structures with polyanionic Au species. 70 , 71 The Au atoms are 6-fold coordinated by La1 ( d Au–La1 = 3.1987(8)–3.216(1) Å), building trigonal prisms, similar to the Au coordination polyhedra in La 7 Au 3 .…”

Section: Resultssupporting

confidence: 86%

Overlooked Binary Compounds Uncovered in the Reinspection of the La–Au System: Synthesis, Crystal Structures, and Electronic Properties of La₇Au₃, La₃Au₂, and La₃Au₄

Ovchinnikov

Mudring

2021

Inorg. Chem.

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Although compound formation between two elements is well studied, thorough investigations make it possible to uncover new binary compounds. A re-examination of the La–Au system revealed three new phases, which were characterized with respect to their structural and electronic properties as well as thermal stability: La 7 Au 3 (Th 7 Fe 3 type, space group P 6 3 mc , Pearson code hP 20) appears to be metastable. It can be obtained by slow crystallization from a stoichiometric melt. La 3 Au 2 (U 3 Si 2 type, space group P 4/ mbm , Pearson code tP 10) is stable up to 1013 K, where it decomposes peritectically. La 3 Au 4 (Pu 3 Pd 4 type, space group R 3̅, Pearson code hR 14) is thermally stable up to at least 1273 K. In addition, the crystal structures of La 2 Au ( anti -PbCl 2 type, space group Pnma , Pearson code oP 12) and α-LaAu (FeB type, space group Pnma , Pearson code oP 8) could be determined by single-crystal X-ray diffraction. The electronic structures and chemical bonding have been evaluated from first principles calculations. They show that all compounds can be viewed as electron-rich, polar intermetallics.

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Section: Resultssupporting

confidence: 86%

Overlooked Binary Compounds Uncovered in the Reinspection of the La–Au System: Synthesis, Crystal Structures, and Electronic Properties of La₇Au₃, La₃Au₂, and La₃Au₄

Ovchinnikov

Mudring

2021

Inorg. Chem.

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“…Two additional peaks on 4 and 5 can be seen at 38° and 45° (as well as on 3). The latter corresponds to gold, [ 16 ] in agreement with the observations made from the TEM images. Hence we can conclude that these three compounds correspond to the targeted composite materials.…”

Section: Resultssupporting

confidence: 85%

The Interplay between Surface Plasmon Resonance and Switching Properties in Gold@Spin Crossover Nanocomposites

Palluel

Tran

Daro

et al. 2020

Adv Funct Materials

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Rod-like gold nanoparticles are directly embedded in a 1D-polymeric spin crossover (SCO) material leading to singular Au@SCO nanohybrid architectures. The resulting architectures are designed to promote a synergetic effect between ultrafast spin-state photoswitching and photothermal properties of plasmonic nanoparticles. This synergy is evidenced by the strong modulation of the surface plasmon resonance of the gold nanorods through the spin-state switching of the SCO component and also the strong enhancement of the photoswitching efficiency compared to pure SCO particles. This remarkable synergy results from the large modulation of the dielectric properties of the SCO polymer upon its thermal switching and the enhancement of the heating of these hybrid nanostructures upon excitation of the surface plasmon resonance of the gold nanorods.

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“…Au bulk has a fcc structure; [45,46] therefore, Au(111) surface has four adsorption sites: atop, bridge, fcc hollow and hcp hollow. The optimized ground state geometries of various species involved in BH 4 À hydrolysis adsorbed on Au(111) surface are given in Figure 1 and the adsorption energies, charge transfer, and binding distances are tabulated in Table 1.…”

Section: Molecular Adsorption On Au(111)mentioning

confidence: 99%

DFT Study of the BH₄⁻ Hydrolysis on Au(111) Surface

et al. 2022

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The mechanism of the catalytic hydrolysis of BH4− on Au(111) as studied by DFT is reported. The results are compared to the analogous process on Ag(111) that was recently reported. It is found that the borohydride species are adsorbed stronger on the Au0‐NP surface than on the Ag0‐NP surface. The electron affinity of the Au is larger than that of Ag. The results indicate that only two steps of hydrolysis are happening on the Au(111) surface and the reaction mechanism differs significantly from that on the Ag(111) surface. These remarkable results were experimentally verified. Upon hydrolysis, only three hydrogens of BH4− are transferred to the Au surface, not all four, and H2 generation is enhanced in the presence of surface H atoms. Thus, it is proposed that the BH4− hydrolysis and reduction mechanisms catalyzed by M0‐NPs depend considerably on the nature of the metal.

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Isothermal section of the Ce–Au–Sb system at 870K

Cited by 16 publications

References 16 publications

Overlooked Binary Compounds Uncovered in the Reinspection of the La–Au System: Synthesis, Crystal Structures, and Electronic Properties of La₇Au₃, La₃Au₂, and La₃Au₄

Overlooked Binary Compounds Uncovered in the Reinspection of the La–Au System: Synthesis, Crystal Structures, and Electronic Properties of La₇Au₃, La₃Au₂, and La₃Au₄

The Interplay between Surface Plasmon Resonance and Switching Properties in Gold@Spin Crossover Nanocomposites

DFT Study of the BH₄⁻ Hydrolysis on Au(111) Surface

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Isothermal section of the Ce–Au–Sb system at 870K

Cited by 16 publications

References 16 publications

Overlooked Binary Compounds Uncovered in the Reinspection of the La–Au System: Synthesis, Crystal Structures, and Electronic Properties of La7Au3, La3Au2, and La3Au4

Overlooked Binary Compounds Uncovered in the Reinspection of the La–Au System: Synthesis, Crystal Structures, and Electronic Properties of La7Au3, La3Au2, and La3Au4

The Interplay between Surface Plasmon Resonance and Switching Properties in Gold@Spin Crossover Nanocomposites

DFT Study of the BH4− Hydrolysis on Au(111) Surface

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Product

Resources

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Overlooked Binary Compounds Uncovered in the Reinspection of the La–Au System: Synthesis, Crystal Structures, and Electronic Properties of La₇Au₃, La₃Au₂, and La₃Au₄

Overlooked Binary Compounds Uncovered in the Reinspection of the La–Au System: Synthesis, Crystal Structures, and Electronic Properties of La₇Au₃, La₃Au₂, and La₃Au₄

DFT Study of the BH₄⁻ Hydrolysis on Au(111) Surface