Results 21 to 30 of about 262 (83)

Formation of Large Ordered Helium Solvation Shells Around Multiply Charged Species: HeNHo2+ and HeNBi2+

open access: yesSmall Structures, Volume 6, Issue 9, September 2025.
Large ordered structures solvating metallic dications species: A combined experimental and theoretical investigation of HeNHo2+ and HeNBi2+ In this article, the results of a combined experimental and theoretical investigation which provides evidence of the existence of large well‐ordered structures of helium atoms in HeNHo2+ and HeNBi2+ clusters.
Florian Foitzik   +10 more
wiley   +1 more source

Network Filtering for Big Data: Triangulated Maximally Filtered Graph [PDF]

open access: yes, 2017
We propose a network-filtering method, the Triangulated Maximally Filtered Graph (TMFG), that provides an approximate solution to the WEIGHTED MAXIMAL PLANAR GRAPH problem. The underlying idea of TMFG consists in building a triangulation that maximizes a
Aste, T, Massara, GP, Matteo, TD
core  

Poliedarske forme nastale spajanjem omotača CP II-10 i zarubljenog dodekaedra [PDF]

open access: yes, 2017
The paper analyzes the possibility of obtaining polyhedral shapes formed by combining polyhedral surfaces based on the segment surface of elongated concave pyramids of the second sort (CeP II-10, type A and type B). In previous research, CP II type A and
Obradović, Marija   +2 more
core   +2 more sources

Delocalization‐ratio analysis of 3‐center bonding in position‐space for closo‐boranes and related systems: Approaching the styx picture and beyond

open access: yesJournal of Computational Chemistry, Volume 45, Issue 32, Page 2862-2877, December 15, 2024.
The Wade's rules and Lipscomb's styx approach constitute a conceptual basis of chemical bonding in closo hydroborane clusters and similar compounds. Based on 3‐center electron sharing indices obtained from DFT wavefunctions, the DR approach for analysis of multicenter bonding in clusters and intermetallic compounds is presented.
Frank R. Wagner
wiley   +1 more source

Where Are the Elements in Complex Aluminides? An Experimental and Theoretical Investigation of the Quasicrystalline Approximants, Mg2-y(ZnxAl1-x)3+y [PDF]

open access: yes, 2000
The first detailed investigation of the crystalline R-phases in the Mg−Zn−Al ternary system is reported, which will assist with the interpretation and understanding of similar quasicrystalline phases in this phase diagram.
Lee, Chin-Shen   +2 more
core   +3 more sources

Unit Origami: Star-Building on Deltahedra [PDF]

open access: yes, 2015
This workshop provides instructions for folding the star-building unit – a modification of the Sonobe module for unit origami. Geometric questions naturally arise during this process, ranging in difficulty from middle school to graduate levels ...
Burgiel, Heidi
core   +1 more source

Reactivity studies of [Co@Sn9]4- with transition metal reagents: bottom-up synthesis of ternary functionalized zintl clusters [PDF]

open access: yes, 2018
The binary cluster [Co@Sn9]4– (1) was extracted directly from ethylenediamine (en) solutions of an intermetallic precursor with nominal composition “K5Co3Sn9”, and its reactions with various organometallic reagents were explored.
Jin, Xiao   +4 more
core   +2 more sources

Quantum-chemical study of carborane(12) rearrangement mechanisms

open access: yesТонкие химические технологии, 2013
The search and analysis of the ground state, intermediate and transition states of carborane(12) thermal isomerization was performed by means of quantum-chemistry methods using B3LYP/6-311+G(d,p) and M062X/6-311+G(d,p) functionals.
A. Yu. Shkulipa   +3 more
doaj  

Single-crystal neutron diffraction study of metamict zircon up to 2000 K [PDF]

open access: yes, 1992
High-temperature single-crystal measurements of metamict zircon were performed up to 2000 K and the recrystallization was monitored using the width and intensity of selected peaks. Full data sets were collected at room temperature, 1573 and 1823 K.
Boysen, Hans   +3 more
core   +1 more source

Nanorods of Silicon and Germanium with Well-Defined Shapes and Sizes [PDF]

open access: yes, 2012
We have made number of important discoveries along the major goals of the project, namely i) electrodeposition of germanium thin films from clusters, ii) synthesis of cluster-based surfactants with long hydrocarbon chains and micelles made of them, iii ...
Sevov, Slavi C.
core   +1 more source

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