Molecular and electronic structures of endohedral fullerenes, Sc2 C2 @C 3v -C82 and Sc2 @C 3v -C82 : Benchmark for SCC-DFTB and proposal of new inner cluster structures

2012 ◽  
Vol 249 (2) ◽  
pp. 324-334 ◽  
Author(s):  
Yoshio Nishimoto ◽  
Zhi Wang ◽  
Keiji Morokuma ◽  
Stephan Irle
Keyword(s):  
Electronic Structures ◽  
Endohedral Fullerenes

ELECTRONIC STRUCTURES OF ENDOHEDRAL Sr@C60, Ba@C60, Fe@C60 and Mn@C60

1999 ◽  
Vol 13 (03n04) ◽  
pp. 97-101 ◽  
Author(s):  
JING LU ◽  
LIXIN GE ◽  
XINWEI ZHANG ◽  
XIANGENG ZHAO
Keyword(s):  
Electronic Structures ◽  
Density Functional Calculations ◽  
Density Functional ◽  
Local Density ◽  
Ionization Potentials ◽  
Electron Affinities ◽  
Oxidation Number ◽  
Endohedral Fullerenes ◽  
Valence Electrons ◽  
Local Density Functional

Discrete-variational local density functional calculations on endoheral Sr @ C 60, Ba @ C 60, Fe @ C 60 and Mn @ C 60 are performed. The Sr (5s2) and Ba (6s2) atoms denote their two s valence electrons to the C 60 cage, described as [Formula: see text] and [Formula: see text]. The Fe (3d64s2) and Mn (3d54s2) atom are in only +1 valence, rather small oxidation number. The electron affinities and ionization potentials of the four endohedral fullerenes are given.

Geometric and electronic structures of new endohedral fullerenes: Eu@C72

2008 ◽  
Vol 14 (6) ◽  
pp. 465-470 ◽  
Author(s):  
Mei Chi ◽  
Zhuxia Zhang ◽  
Peide Han ◽  
Xiaohong Fang ◽  
Wei Jia ◽  
...  
Keyword(s):  
Electronic Structures ◽  
Endohedral Fullerenes

The Nature of Oxide Surfaces: Topographic and Electronic Structure

1993 ◽  
Vol 51 ◽  
pp. 966-967
Author(s):  
Dawn A. Bonnell ◽  
Yong Liang
Keyword(s):  
Transition Metal Oxides ◽  
Electronic Structures ◽  
Recent Progress ◽  
Spatial Localization ◽  
Level Of Detail ◽  
Scanning Tunneling ◽  
Oxide Surfaces ◽  
Tunneling Microscopy ◽  
Considerable Effort ◽  
Complete Understanding

Recent progress in the application of scanning tunneling microscopy (STM) and tunneling spectroscopy (STS) to oxide surfaces has allowed issues of image formation mechanism and spatial resolution limitations to be addressed. As the STM analyses of oxide surfaces continues, it is becoming clear that the geometric and electronic structures of these surfaces are intrinsically complex. Since STM requires conductivity, the oxides in question are transition metal oxides that accommodate aliovalent dopants or nonstoichiometry to produce mobile carriers. To date, considerable effort has been directed toward probing the structures and reactivities of ZnO polar and nonpolar surfaces, TiO2 (110) and (001) surfaces and the SrTiO3 (001) surface, with a view towards integrating these results with the vast amount of previous surface analysis (LEED and photoemission) to build a more complete understanding of these surfaces. However, the spatial localization of the STM/STS provides a level of detail that leads to conclusions somewhat different from those made earlier.

Advanced Electronic Structures

1992 ◽  
Author(s):  
Mark van Schilfgaarde
Keyword(s):  
Electronic Structures

On the Structure of Lead(II) Complexes in Aqueous Solutions. I. Trinuclear Clusters

1995 ◽  
Vol 60 (4) ◽  
pp. 527-536 ◽  
Author(s):  
Martin Breza ◽  
Alena Manová
Keyword(s):  
Quantum Chemistry ◽  
Aqueous Solutions ◽  
Electronic Structures ◽  
Mndo Method ◽  
Model Systems ◽  
Trinuclear Clusters ◽  
The Stability ◽  
Semiempirical Mndo

Using semiempirical MNDO method of quantum chemistry the optimal geometries and corresponding electronic structures of [Pb3(OH)n]6-n model systems as well as of their hydrated [Pb3(OH)n(H2O)8-n]6-n analogues (n = 4, 5) are investigated. The most stable trinuclear lead(II) complexes present in aqueous solutions correspond to cyclo-(μ3-OH)(μ2-OH)3Pb32+, Pb(μ-OH)2Pb(μ-OH)2Pb2+, cyclo-(μ3-OH)2(μ2-OH)3Pb3+, Pb(OH)(μ-OH)2Pb(μ-OH)Pb(OH)+ and Pb(OH)(μ-OH)2Pb(μ-OH)2Pb+ systems. The key role of OH bridges (by vanishing direct Pb-Pb bonds) on the stability of individual isomers is discussed.

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