Electronic Configurations of Superheavy Elements

1996 ◽  
Vol 65 (10) ◽  
pp. 3175-3179 ◽  
Author(s):  
Koichiro Umemoto ◽  
Susumu Saito
Keyword(s):  
Superheavy Elements ◽  
Electronic Configurations

Electronic configurations and the periodic table for superheavy elements

2006 ◽  
Vol 408 (2) ◽  
pp. 149-151 ◽  
Author(s):  
V. I. Nefedov ◽  
M. B. Trzhaskovskaya ◽  
V. G. Yarzhemskii
Keyword(s):  
Periodic Table ◽  
Superheavy Elements ◽  
Electronic Configurations

scholarly journals Structural tuning of heterogeneous molecular catalysts for electrochemical energy conversion

2021 ◽  
Vol 7 (13) ◽  
pp. eabf3989
Author(s):  
Jiong Wang ◽  
Shuo Dou ◽  
Xin Wang
Keyword(s):  
Energy Conversion ◽  
Model Systems ◽  
Structural Variations ◽  
Metal Centers ◽  
Electrochemical Energy Conversion ◽  
Electronic Configurations ◽  
Coordination Spheres ◽  
The Stability ◽  
Molecular Catalysts ◽  
Electrochemical Energy

Heterogeneous molecular catalysts based on transition metal complexes have received increasing attention for their potential application in electrochemical energy conversion. The structural tuning of first and second coordination spheres of complexes provides versatile strategies for optimizing the activities of heterogeneous molecular catalysts and appropriate model systems for investigating the mechanism of structural variations on the activity. In this review, we first discuss the variation of first spheres by tuning ligated atoms; afterward, the structural tuning of second spheres by appending adjacent metal centers, pendant groups, electron withdrawing/donating, and conjugating moieties on the ligands is elaborated. Overall, these structural tuning resulted in different impacts on the geometric and electronic configurations of complexes, and the improved activity is achieved through tuning the stability of chemisorbed reactants and the redox behaviors of immobilized complexes.

scholarly journals Characterization of Charge States in Conducting Organic Nanoparticles by X-ray Photoemission Spectroscopy

Materials ◽  
2021 ◽  
Vol 14 (8) ◽  
pp. 2058
Author(s):  
Jordi Fraxedas ◽  
Antje Vollmer ◽  
Norbert Koch ◽  
Dominique de Caro ◽  
Kane Jacob ◽  
...  
Keyword(s):  
Partial Oxidation ◽  
Chemical Shifts ◽  
Large Family ◽  
Photoemission Spectroscopy ◽  
Intrinsic Structure ◽  
X Ray ◽  
Level Lines ◽  
Donor And Acceptor ◽  
Electronic Configurations

The metallic and semiconducting character of a large family of organic materials based on the electron donor molecule tetrathiafulvalene (TTF) is rooted in the partial oxidation (charge transfer or mixed valency) of TTF derivatives leading to partially filled molecular orbital-based electronic bands. The intrinsic structure of such complexes, with segregated donor and acceptor molecular chains or planes, leads to anisotropic electronic properties (quasi one-dimensional or two-dimensional) and morphology (needle-like or platelet-like crystals). Recently, such materials have been synthesized as nanoparticles by intentionally frustrating the intrinsic anisotropic growth. X-ray photoemission spectroscopy (XPS) has emerged as a valuable technique to characterize the transfer of charge due to its ability to discriminate the different chemical environments or electronic configurations manifested by chemical shifts of core level lines in high-resolution spectra. Since the photoemission process is inherently fast (well below the femtosecond time scale), dynamic processes can be efficiently explored. We determine here the fingerprint of partial oxidation on the photoemission lines of nanoparticles of selected TTF-based conductors.

The use of PIXE in generating evidence for primordial superheavy elements

1977 ◽  
Vol 142 (1-2) ◽  
pp. 307-309 ◽  
Author(s):  
T.A. Cahill ◽  
R.G. Flocchini ◽  
J.W. Nelson ◽  
N.R. Fletcher ◽  
H.C. Kaufmann ◽  
...  
Keyword(s):  
Superheavy Elements

Formation of heavy and superheavy elements by reactions with massive nuclei

2004 ◽  
Vol 19 (1) ◽  
pp. 89-104 ◽  
Author(s):  
G. Fazio ◽  
G. Giardina ◽  
A. Lamberto ◽  
R. Ruggeri ◽  
C. Saccá ◽  
...  
Keyword(s):  
Superheavy Elements

scholarly journals Fusion hindrance and synthesis of superheavy elements

2006 ◽  
Vol 69 (7) ◽  
pp. 1101-1109 ◽  
Author(s):  
Y. Abe ◽  
G. I. Kosenko ◽  
C. W. Shen ◽  
B. Bouriquet ◽  
A. Marchix ◽  
...  
Keyword(s):  
Superheavy Elements

Mica giant halos suggest natural superheavy elements

Physics Today ◽  
1976 ◽  
Vol 29 (8) ◽  
pp. 17-20
Author(s):  
Gloria B. Lubkin
Keyword(s):  
Superheavy Elements
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