Metal ion attachment to the matrix meso-tetrakis(pentafluorophenyl)porphyrin, related matrices and analytes: an experimental and theoretical study

2009 ◽  
Vol 44 (11) ◽  
pp. 1556-1564 ◽  
Author(s):  
Jeroen J. A. van Kampen ◽  
Theo M. Luider ◽  
Paul J. A. Ruttink ◽  
Peter C. Burgers
Keyword(s):  
Metal Ion ◽  
Theoretical Study ◽  
The Matrix ◽  
Ion Attachment

scholarly journals Modelling and analysis of a NTVV-SVM based three-level twin-step matrix converter

2018 ◽  
Vol 7 (4) ◽  
pp. 2672
Author(s):  
Shamsher Ansari ◽  
Aseem Chandel ◽  
SMIEEE . ◽  
Zulfiqar Ali Sheikh
Keyword(s):  
High Power ◽  
Theoretical Study ◽  
Matrix Converter ◽  
Matrix Converters ◽  
Output Performance ◽  
The Matrix ◽  
Power Switches ◽  
Converter Topology ◽  
Vector Modulation ◽  
Ac Converters

Recently the tremendous advancement has been seen in the field of matrix converter topology. For high power drive applications, industries often need high power AC-AC converters like three level matrix converter because it is having the ability to generate a set of balanced sine waves for inputs as well as outputs. The three level matrix converters possess better output performance with reduced harmonic contents compared to all two-stage indirect matrix converters. In this matrix converter topology, the idea of neutral-point clamped-VSI is employed to the inversion step of the matrix converter circuitry. To control the power switches the gate signals are produced using NTVV based space vector modulation. To justify the theoretical study a complete model of a three-level twin-step matrix converter has been designed in Matlab/Simulink and its performances are analysed.  

scholarly journals Терагерцовая спектроскопия магнитоэлектрика HoAl-=SUB=-3-=/SUB=-(BO-=SUB=-3-=/SUB=-)-=SUB=-4-=/SUB=-

2022 ◽  
Vol 130 (1) ◽  
pp. 59
Author(s):  
А.М. Кузьменко ◽  
В.Ю. Иванов ◽  
А.Ю. Тихановский ◽  
А.Г. Пименов ◽  
А.М. Шуваев ◽  
...  
Keyword(s):  
Crystal Field ◽  
Excited States ◽  
Ground State ◽  
Theoretical Study ◽  
Low Frequency ◽  
Local Symmetry ◽  
Matrix Elements ◽  
The Matrix ◽  
Excitation Conditions ◽  
Ground Multiplet

Experimental and theoretical study of submillimeter (terahertz) spectroscopic and magnetic properties of the rare-earth aluminum borate HoAl3(BO3)4 were performed at temperatures 3–300 K. In the transmittance spectra a number of resonance lines were detected at frequencies 2–35 cm–1 for different radiation polarizations. These modes were identified as transitions between the lower levels of the ground multiplet of the Ho3+ ion split by the crystal field, including both transitions from the ground state to the excited ones and transitions between the excited states. The established excitation conditions of the observed modes and the simulation of the spectra made it possible to separate the magnetic and electric dipole transitions and to determine the energies of the corresponding states, their symmetry, and the matrix elements of the transitions. Low-frequency lines that do not fit into the established picture of the electron states of Ho3+ were also found; these lines, apparently, correspond to the ions with the distorted by defects local symmetry of the crystal field.

scholarly journals Влияние орбитального упорядочения на спектры магнитного резонанса в зарядово-упорядоченных и фрустрированных манганитах

2019 ◽  
Vol 61 (5) ◽  
pp. 841
Author(s):  
Л.Э. Гончарь
Keyword(s):  
Metal Ion ◽  
Alkaline Earth ◽  
Theoretical Study ◽  
Earth Metal ◽  
Exchange Interactions ◽  
Alkaline Earth Metal ◽  
Antiferromagnetic Resonance ◽  
Rare Earth Ion ◽  
Magnetic Structures ◽  
Low Dimensional

A theoretical study of the interrelation of the crystal structure, charge, orbital, and magnetic subsystems in R1–xAxMnO3 charge-ordered manganites has been carried out (where R3+ is the rare earth ion, A2+ is the alkaline earth metal ion, x = 0.5, 2/3). The model of orbital-dependent exchange interactions and single-ion anisotropy is used. The presence of quasi-low-dimensional magnetic structures is exhibited. The spin waves spectra and antiferromagnetic resonance spectra are calculated.

The significance of the alkene size and the nature of the metal ion in metal–alkene complexes: a theoretical study

2012 ◽  
Vol 41 (16) ◽  
pp. 4965 ◽  
Author(s):  
J. Richard Premkumar ◽  
Dolly Vijay ◽  
G. Narahari Sastry
Keyword(s):  
Metal Ion ◽  
Theoretical Study

ChemInform Abstract: Experimental and Theoretical Study of the First Thiacalixcrowns (I) and Their Alkali Metal Ion Complexes.

ChemInform ◽  
2010 ◽  
Vol 33 (8) ◽  
pp. no-no
Author(s):  
Veronique Lamare ◽  
Jean-Francois Dozol ◽  
Pierre Thuery ◽  
Martine Nierlich ◽  
Zouhair Asfari ◽  
...  
Keyword(s):  
Alkali Metal ◽  
Metal Ion ◽  
Theoretical Study ◽  
Metal Ion Complexes ◽  
Alkali Metal Ion

Metal ion binding by pyridylethyl-containing polymers: experimental and theoretical study

2016 ◽  
Vol 45 (31) ◽  
pp. 12372-12383 ◽  
Author(s):  
Svetlana Bratskaya ◽  
Alexey Voit ◽  
Yuliya Privar ◽  
Albert Ziatdinov ◽  
Alexander Ustinov ◽  
...  
Keyword(s):  
Metal Ion ◽  
Theoretical Study ◽  
Ion Binding ◽  
Metal Ion Binding ◽  
Polymer Precursors

Structure of polymer precursors significantly affects binding efficiency of their pyridylethylated derivatives toward Cu2+, Ni2+, and Ag+ ions.

Density functional theoretical study on attachment sites of Mg2+ and Ca2+ and metal ion affinity to Crenulatin molecule

2008 ◽  
Vol 19 (3) ◽  
pp. 541-548 ◽  
Author(s):  
Xinlu Cheng ◽  
Xinfang Su ◽  
Xingwen Zhao ◽  
Hengjie Chen
Keyword(s):  
Metal Ion ◽  
Density Functional ◽  
Theoretical Study ◽  
Attachment Sites
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