Double-arm three-dimensional ion imaging apparatus for the study of ion pair channels in resonance enhanced multiphoton ionization

2016 ◽  
Vol 87 (2) ◽  
pp. 023107 ◽  
Author(s):  
M. S. Poretskiy ◽  
A. I. Chichinin ◽  
C. Maul ◽  
K.-H. Gericke
Keyword(s):  
Multiphoton Ionization ◽  
Three Dimensional ◽  
Ion Pair ◽  
Ion Imaging

Ultraviolet photodissociation dynamics of PCl3 at 235 nm: three-dimensional ion imaging and theoretical analysis

2021 ◽  
Author(s):  
Alexei Chichinin ◽  
Christof Maul ◽  
Karl-Heinz Gericke
Keyword(s):  
Theoretical Analysis ◽  
Ground State ◽  
Multiphoton Ionization ◽  
Three Dimensional ◽  
Ion Imaging ◽  
Ultraviolet Photodissociation

The photodissociation dynamics of PCl3 at 235 nm has been studied by monitoring ground state Cl(2P3/2) and spin-orbitally excited Cl(2P1/2) atoms by resonance enhanced multiphoton ionization(REMPI). Also, the PCl+n (n=0,1,2)...

Three-dimensional ion imaging study of PCl3 photodissociation at 235 nm

2020 ◽  
Author(s):  
A.I. Chichinin ◽  
C. Maul ◽  
K.-H. Gericke
Keyword(s):  
Three Dimensional ◽  
Imaging Study ◽  
Ion Imaging

Three-dimensional (3D) velocity map imaging: from technique to application

2022 ◽  
Author(s):  
Gihan Basnayake ◽  
Yasashri Ranathunga ◽  
Suk Kyoung Lee ◽  
Wen Li
Keyword(s):  
Three Dimensional ◽  
Cost Effective ◽  
Velocity Map Imaging ◽  
Imaging Method ◽  
Translational Energy ◽  
Ion Imaging ◽  
Standard Tool ◽  
Recent Advancement ◽  
Acquisition Speed ◽  
Energy And Angular Distributions

Abstract The velocity map imaging (VMI) technique was first introduced by Eppink and Parker in 1997, as an improvement to the original ion imaging method by Houston and Chandler in 1987. The method has gained huge popularity over the past two decades and has become a standard tool for measuring high-resolution translational energy and angular distributions of ions and electrons. VMI has evolved gradually from 2D momentum measurements to 3D measurements with various implementations and configurations. The most recent advancement has brought unprecedented 3D performance to the technique in terms of resolutions (both spatial and temporal), multi-hit capability as well as acquisition speed while maintaining many attractive attributes afforded by conventional VMI such as being simple, cost-effective, visually appealing and versatile. In this tutorial we will discuss many technical aspects of the recent advancement and its application in probing correlated chemical dynamics.

scholarly journals 5-Acetyl-4-(3-hydroxyphenyl)-6-methyl-1,2,3,4-tetrahydropyrimidin-2-one–tris(hydroxymethyl)ammonium chloride (2/1)

2013 ◽  
Vol 69 (12) ◽  
pp. o1766-o1767 ◽  
Author(s):  
C. A. M. A. Huq ◽  
S. Fouzia ◽  
M. NizamMohideen
Keyword(s):  
Hydrogen Bonds ◽  
Ammonium Chloride ◽  
Three Dimensional ◽  
Chloride Ion ◽  
Chair Conformation ◽  
Pyrimidine Ring ◽  
Pyrimidine Derivative ◽  
Ion Pair ◽  
Framework Structure ◽  
Pyrimidine Derivatives

The asymmetric unit of the title compound, 2C13H14N2O3·C3H10NO3+·Cl−, contains two independent molecules (AandB) of the title pyrimidine derivative and one ion-pair of tris(hydroxymethyl)ammonium chloride. The pyrimidine ring in each pyrimidine derivative has a half-chair conformation. Its mean plane is inclined to the benzene ring by 87.2 (3)° in moleculeAand 85.7 (2)° in moleculeB. In the crystal, the pyrimidine derivatives are connected to each other by N—H...O hydrogen bonds, forming chains propagating along theb-axis direction. The chains are linkedviaO—H—Cl hydrogen bonds, forming corrugated sheets lying parallel to thebcplane. The sheets are linkedviaC—H...O hydrogen bonds, forming a three-dimensional framework. The tris(hydroxymethyl)ammonium chloride molecules are located in the cages of the framework. There are also further C—H...O hydrogen bonds and C—H...π interactions present in the three-dimensional framework structure. Both the cation and chloride anion of the tris(hydroxymethyl)ammonium chloride ion pair are disordered over two positions, with a refined occupancy ratio of 0.418 (8):0.582 (8) for the cation and 0.71 (4):0.29 (4) for the anion.

Crystal structure of (Z)-cefprozil monohydrate, C18H19N3O5S(H2O)

2019 ◽  
Vol 34 (4) ◽  
pp. 379-388
Author(s):  
Zachary R. Butler ◽  
James A. Kaduk ◽  
Amy M. Gindhart ◽  
Thomas N. Blanton
Keyword(s):  
Crystal Structure ◽  
Powder Diffraction ◽  
Density Functional ◽  
Three Dimensional ◽  
Ion Pair ◽  
Powder Diffraction Data ◽  
Powder Diffraction File ◽  
X Ray ◽  
Dimensional Network ◽  
Acid Proton

The crystal structure of cefprozil monohydrate has been solved and refined using synchrotron X-ray powder diffraction data and optimized using density functional techniques. Cefprozil monohydrate crystallizes in space group P21 (#4) with a = 11.26513(6), b = 11.34004(5), c = 14.72649(11) Å, β = 90.1250(4)°, V = 1881.262(15) Å3, and Z = 4. Although a reasonable fit was obtained using an orthorhombic model, closer examination showed that many peaks were split and/or had shoulders, and thus the true symmetry was monoclinic. DFT calculations revealed that one carboxylic acid proton moved to an amino group. The structure thus contains one ion pair and one pair of neutral molecules. This protonation was confirmed by infrared spectroscopy. There is an extensive array of hydrogen bonds resulting in a three-dimensional network. The powder pattern has been submitted to ICDD® for inclusion in the Powder Diffraction File™.

N-(4-Nitrobenzyl)quinolinium bis(2-thioxo-1,3-dithiole-4,5-dithiolato)palladium(III) acetone solvate

2006 ◽  
Vol 62 (5) ◽  
pp. m1002-m1003 ◽  
Author(s):  
Shuang-Quan Zang ◽  
Yang Su ◽  
Ruo-Jie Tao
Keyword(s):  
Hydrogen Bonds ◽  
Network Structure ◽  
Three Dimensional ◽  
Ion Pair ◽  
Supramolecular Network ◽  
Coordination Geometry ◽  
Compound C ◽  
Square Planar

In the title ion-pair compound, (C16H13N2O2)[Pd(C3S5)2]·C3H6O, the PdIII atom exhibits square-planar coordination geometry involving four S atoms of two 2-thioxo-1,3-dithiole-4,5-dithiolate (dmit) ligands. Some weak S...S interactions and hydrogen bonds are found, resulting in a three-dimensional supramolecular network structure.

scholarly journals About the polymorphism of [Li(C4H8O)3]I: crystal structures of trigonal and tetragonal polymorphs

2014 ◽  
Vol 70 (12) ◽  
pp. 555-558
Author(s):  
Stefanie Gärtner ◽  
Tobias Gärtner ◽  
Ruth-Maria Gschwind ◽  
Nikolaus Korber
Keyword(s):  
Rotation Axis ◽  
Ion Pairs ◽  
Three Dimensional ◽  
Intermolecular Forces ◽  
Ion Pair ◽  
Lithium Cation ◽  
Tetrahedral Coordination ◽  
Space Group ◽  
Trigonal Structure ◽  
Van Der Waals Contacts

Two new trigonal and tetragonal polymorphs of the title compound, iodidotris(tetrahydrofuran-κO)lithium, are presented, which both include the isolated ion pair Li(THF)3+·I−. One Li—I ion contact and three tetrahydrofuran (THF) molecules complete the tetrahedral coordination of the lithium cation. The three-dimensional arrangement in the two polymorphs differs notably. In the trigonal structure, the ion pair is located on a threefold rotation axis of space groupP-3 and only one THF molecule is present in the asymmetric unit. In the crystal, strands of ion pairs parallel to [001] are observed with an eclipsed conformation of the THF molecules relative to the Li...I axis of two adjacent ion pairs. In contrast, the tetragonal polymorph shows a much larger unit cell in which all atoms are located on general positions of the space groupI41cd. The resulting three-dimensional arrangement shows helical chains of ion pairs parallel to [001]. Apart from van der Waals contacts, no remarkable intermolecular forces are present between the isolated ion pairs in both structures.

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