A 45-degree ion-extraction photoelectron velocity map imaging apparatus coupled to the DUV-IR mass spectrometry and spectroscopy instrument

Zhang, Hanyu; Geng, Lijun; Jia, Yuhan; Lei, Xiaoguang; Luo, Zundu

doi:10.1016/j.ijms.2022.116932

Cited by 2 publications

(3 citation statements)

References 40 publications

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“…The experiments were carried out by using a customized reflection time-of-flight mass spectrometer combined with the newly developed pulsed LaVa source, a compact flow tube reactor, and a 45° ion-extraction photoelectron velocity map imaging apparatus ( 29 , 52 , 53 ). A translatable and rotating rhodium disk (99.95%, ɸ = 16 mm) was used as the target of laser ablation to generate the Rh n − clusters, with He (99.999%, 1 MPa) as a buffer gas.…”

Section: Methodsmentioning

confidence: 99%

“…We have recently developed an integrated instrument of time-of-flight mass spectrometry (TOF-MS) and photoelectron spectroscopy (PES) (figs. S1 and S2) that provides experimental techniques for preparing pure metal clusters and studying their reactivity and electronic structures ( 28 , 29 ). Here, we report the formation and reactions of anionic Rh n − ( n = 3 to 33) clusters with a few typical gases (including O 2 , CO 2 , CH 4 , and CH 3 Br).…”

Section: Introductionmentioning

confidence: 99%

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Rh ₁₉ ⁻ : A high-spin super-octahedron cluster

Jia

Cui

et al. 2023

Sci. Adv.

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Probing atomic clusters with magic numbers is of supreme importance but challenging in cluster science. Pronounced stability of a metal cluster often arises from coincident geometric and electronic shell closures. However, transition metal clusters do not simply abide by this constraint. Here, we report the finding of a magic-number cluster Rh 19 − with prominent inertness in the sufficient gas-collision reactions. Photoelectron spectroscopy experiments and global-minimum structure search have determined the geometry of Rh 19 − to be a regular O h ‑[Rh@Rh 12 @Rh 6 ] − with unusual high-spin electronic configuration. The distinct stability of such a strongly magnetic cluster Rh 19 − consisting of a nonmagnetic element is fully unveiled on the basis of its unique bonding nature and superatomic states. The 1-nanometer–sized O h -Rh 19 − cluster corresponds to a fragment of the face-centered cubic lattice of bulk rhodium but with altered magnetism and electronic property. This cluster features exceptional electron-spin state isomers confirmed in photoelectron spectra and suggests potential applications in atomically precise manufacturing involving spintronics and quantum computing.

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Section: Methodsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Rh ₁₉ ⁻ : A high-spin super-octahedron cluster

Jia

Cui

et al. 2023

Sci. Adv.

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“…The experiments are conducted on a customized instrument combining Re-TOFMS and a VMI apparatus. , Anionic niobium clusters were generated by the ablation of a niobium disk (99.95%) with a pulsed (10 Hz) 532 nm laser (Nd:YAG, Beamtech Optronics Co., Ltd.). They were later carried into a reaction tube through a nozzle (3 mm in diameter, 30 mm long) by the pulsed (10 Hz, Parker general valve, series 9) buffer gas (He, 99.999%) with 1 MPa backing pressure.…”

Section: Methodsmentioning

confidence: 99%

Enhanced Stability of Rhombic Dodecahedron Nb₁₅^– with Well-Organized Superatomic States

Lei

et al. 2023

J. Phys. Chem. A

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Well-resolved Nb n − clusters are produced and reacted with ethene and propene via a downstream flow tube reactor. Interestingly, the Nb n − clusters readily react with ethene and propene to form dehydrogenation products; however, Nb 15 − shows up in the mass spectra with prominent mass abundance indicating its inertness to react with olefins. For this cluster, we conduct photoelectron velocity map imaging (VMI) experiments and verify the stability of Nb 15 − within a highly symmetrical rhombic dodecahedron structure. Theoretical studies show that the stability of the Nb 15 − cluster is correlated with its superatomic nature pertaining to both geometric and electronic shell closures. Notably, the superatomic 1s orbital is dominated by the 5s electron of the central Nb atom, while the other superatomic orbitals are contributed by s−d hybridization, especially a remarkable contribution of s−d z 2 hybridization. Apart from the closed shells, the highly symmetric geometry of Nb 15 − is associated with a regular polyhedral structure directed by all rhombus facets, embodying a magic number for body-centered dodecahedra, indicative of enhanced stability as a double magic cluster free of olefin adsorption.

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A 45-degree ion-extraction photoelectron velocity map imaging apparatus coupled to the DUV-IR mass spectrometry and spectroscopy instrument

Cited by 2 publications

References 40 publications

Rh ₁₉ ⁻ : A high-spin super-octahedron cluster

Rh ₁₉ ⁻ : A high-spin super-octahedron cluster

Enhanced Stability of Rhombic Dodecahedron Nb₁₅^– with Well-Organized Superatomic States

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A 45-degree ion-extraction photoelectron velocity map imaging apparatus coupled to the DUV-IR mass spectrometry and spectroscopy instrument

Cited by 2 publications

References 40 publications

Rh 19 − : A high-spin super-octahedron cluster

Rh 19 − : A high-spin super-octahedron cluster

Enhanced Stability of Rhombic Dodecahedron Nb15– with Well-Organized Superatomic States

Contact Info

Product

Resources

About

Rh ₁₉ ⁻ : A high-spin super-octahedron cluster

Rh ₁₉ ⁻ : A high-spin super-octahedron cluster

Enhanced Stability of Rhombic Dodecahedron Nb₁₅^– with Well-Organized Superatomic States