An x-ray rocking curve technique for the absolute characterization of epitaxial layers and single-crystal solids

2002 ◽  
Vol 80 (6) ◽  
pp. 935-937 ◽  
Author(s):  
M. Fatemi
Keyword(s):  
Single Crystal ◽  
Epitaxial Layers ◽  
Rocking Curve ◽  
X Ray ◽  
The Absolute

Fabrication and Characterization of X-Ray Spectroscopic Imaging Arrays Based on Thick Single-Crystal CdTe Epitaxial Layers

2012 ◽  
Vol 59 (12) ◽  
pp. 3450-3455 ◽  
Author(s):  
Madan Niraula ◽  
Kazuhito Yasuda ◽  
Syuhei Namba ◽  
Takaki Kondo ◽  
Shinya Muramatsu ◽  
...  
Keyword(s):  
Single Crystal ◽  
Spectroscopic Imaging ◽  
Epitaxial Layers ◽  
Imaging Arrays ◽  
X Ray ◽  
Fabrication And Characterization

Synthesis and characterization of six-coordinate iron(II/III) 5,10,15,20-tetrakis(pentafluorophenyl) porphyrinato complexes with non-hindered imidazole ligands

2018 ◽  
Vol 22 (09n10) ◽  
pp. 953-964 ◽  
Author(s):  
Haimang Wang ◽  
Xuehong Wei ◽  
Jianfeng Li
Keyword(s):  
Hydrogen Bonding ◽  
Single Crystal ◽  
Negative Correlation ◽  
Synthesis And Characterization ◽  
Axial Distance ◽  
X Ray ◽  
Vis Spectroscopy ◽  
The Absolute ◽  
Imidazole Ligands

Four bis-imidazole iron(II/III) 5,10,15,20-tetrakis(pentafluorophenyl)porphyrinato (TFPP) complexes, [Fe(TFPP)(1-MeIm)[Formula: see text]], [Fe(TFPP)(1-VinylIm)[Formula: see text]], [Fe(TFPP)(4-MeHIm)[Formula: see text]]Cl and [Fe(TFPP)(1-EtIm)[Formula: see text]]BF[Formula: see text] (1-MeIm [Formula: see text] 1-methylimidazole, 1-VinylIm [Formula: see text] 1-vinylimidazole, 4-MeHIm [Formula: see text] 4-methylimidazole and 1-EtIm [Formula: see text] 1-ethylimidazole) were synthesized and characterized by single-crystal X-ray and UV-vis spectroscopy. A negative correlation is found between the absolute imidazole orientation ([Formula: see text] and the Fe–N[Formula: see text] distance for the [Fe(II)(Porph)(Im)[Formula: see text]] (Im [Formula: see text] 1-MeIm or 4-MeHIm) complexes where the smaller [Formula: see text] angle corresponds to a longer axial distance. Hydrogen bonding, which might affect the orientations of the axial imidazoles is found for Fe(TFPP)(4-MeHIm)[Formula: see text]]Cl (A and B). The autoreduction of [Fe(III)(TFPP)]Cl to [Fe(II)(TFPP)(1-MeIm)[Formula: see text]] with 1-methylimidazole has been monitored by UV-vis spectroscopic titration.

Synthesis and structural characterization of a magnesium phthalocyanine(3–) anion

2012 ◽  
Vol 16 (01) ◽  
pp. 154-162 ◽  
Author(s):  
Edwin W.Y. Wong ◽  
Daniel B. Leznoff
Keyword(s):  
Absorption Spectrum ◽  
Solid State ◽  
Single Crystal ◽  
Structural Characterization ◽  
Heterometallic Complex ◽  
State Structure ◽  
Solid State Structure ◽  
X Ray ◽  
X Ray Crystallography

The reduction of magnesium phthalocyanine (MgPc) with 2.2 equivalents of potassium graphite in 1,2-dimethoxyethane (DME) gives [K2(DME)4]PcMg(OH)(1) in 67% yield. Compound 1 was structurally characterized using single crystal X-ray crystallography and was found to be a monomeric, heterometallic complex consisting of a μ3-OH ligand that bridges a [MgIIPc3-]- anion to two potassium cations solvated by four DME molecules. An absorption spectrum of 1 confirms the Pc ligand is singly reduced and has a 3–charge. The solid-state structure of 1 does not indicate breaking of the aromaticity of the Pc ligand. Compound 1 is only the second Pc3- complex and the first reduced MgPc to be isolated and structurally characterized.

Electrocrystallizing C60: synthesis, single crystal x-ray structure, and magnetic (ESR, SQUID) characterization of [(C6H5)4P]2[C60][I]x

1993 ◽  
Vol 115 (22) ◽  
pp. 10392-10393 ◽  
Author(s):  
Alain Penicaud ◽  
Aaron Perez-Benitez ◽  
R. Gleason V. ◽  
E. Munoz P. ◽  
R. Escudero
Keyword(s):  
Single Crystal ◽  
X Ray

Structural Systematics of Rare Earth Complexes. VII. Crystal Structure of Bis(2,2'/6',2␛-Terpyridinium) Octaaquaterbium(III) Heptachloride Hydrate

1994 ◽  
Vol 47 (2) ◽  
pp. 391 ◽  
Author(s):  
CJ Kepert ◽  
BW Skeleton ◽  
AH White
Keyword(s):  
Crystal Structure ◽  
Rare Earth ◽  
Single Crystal ◽  
Structural Characterization ◽  
Title Compound ◽  
Room Temperature ◽  
Chloride Ions ◽  
Full Matrix ◽  
X Ray

The room-temperature single-crystal X-ray structural characterization of the title compound (tpyH2)2[Tb(OH2)8]Cl7.~2⅓H2O is recorded. Crystals are triclinic, Pī , a 17.063(5), b 16.243(3), c 7.878(3) Ǻ, α 84.78(2), β 84.39(3), γ 87.81(2)°, Z = 2 formula units; 3167 'observed' diffractometer reflections were refined by full-matrix least-squares procedures to a residual of 0.057. Notable features of interest of the compound are the 'chelation' of chloride ions by the terpyridinium cations , and the existence of a free [Tb(OH2)8]2+ cation in the presence of an abundance of chloride ions.

scholarly journals After 200 Years: The Structure of Bleach and Characterization of Hypohalite Ions by Single‐Crystal X‐Ray Diffraction

2021 ◽  
Author(s):  
Filip Topić ◽  
Joseph M. Marrett ◽  
Tristan H. Borchers ◽  
Hatem M. Titi ◽  
Christopher J. Barrett ◽  
...  
Keyword(s):  
Single Crystal ◽  
X Ray Diffraction ◽  
X Ray

scholarly journals Arene Ruthenium Metalla-Assemblies with Anthracene Moieties for PDT Applications

Inorganics ◽  
2018 ◽  
Vol 6 (3) ◽  
pp. 97 ◽  
Author(s):  
Marie Gaschard ◽  
Farzaneh Nehzat ◽  
Thomas Cheminel ◽  
Bruno Therrien
Keyword(s):  
Molecular Structure ◽  
Single Crystal ◽  
General Formula ◽  
Structure Analysis ◽  
White Light ◽  
Light Irradiation ◽  
Synthesis And Characterization ◽  
X Ray

The synthesis and characterization of three metalla-rectangles of the general formula [Ru4(η6-p-cymene)4(μ4-clip)2(μ2-Lanthr)2][CF3SO3]4 (Lanthr: 9,10-bis(3,3’-ethynylpyridyl) anthracene; clip = oxa: oxalato; dobq: 2,5-dioxido-1,4-benzoquinonato; donq: 5,8-dioxido-1,4-naphthoquinonato) are presented. The molecular structure of the metalla-rectangle [Ru4(η6-p-cymene)4(μ4-oxa)2(μ2-Lanthr)2]4+ has been confirmed by the single-crystal X-ray structure analysis of [Ru4(η6-p-cymene)4(μ4-oxa)2(μ2-Lanthr)2][CF3SO3]4 · 4 acetone (A2 · 4 acetone), thus showing the anthracene moieties to be available for reaction with oxygen. While the formation of the endoperoxide form of Lanthr was observed in solution upon white light irradiation, the same reaction does not occur when Lanthr is part of the metalla-assemblies.

Isolation and characterization of a tetranuclear Pt–Fe⋯Fe–Pt intermediate en route to the trinuclear Pt–Fe–Pt cluster

2017 ◽  
Vol 46 (40) ◽  
pp. 14012-14020
Author(s):  
Kazuhiro Uemura ◽  
Masahiro Taoka
Keyword(s):  
Single Crystal ◽  
Intermediate Compound ◽  
Mononuclear Complex ◽  
Synthetic Process ◽  
X Ray ◽  
Pt Complex ◽  
Isolation And Characterization ◽  
Physical Measurements ◽  
Pt Cluster

An intermediate compound of a tetranuclear Pt–Fe⋯Fe–Pt complex in the synthetic process to form a trinuclear Pt–Fe–Pt complex by mixing the “amidate-hanging” Pt mononuclear complex and iron sources was successfully isolated and characterized by single-crystal X-ray analysis and several physical measurements.

The Performance of Channel Cut Collimators for Precision X-Ray Diffraction Studies of Epitaxial Layers

1990 ◽  
Vol 208 ◽  
Author(s):  
Neil Loxley ◽  
D. Keith Bowen ◽  
Brian K. Tanner
Keyword(s):  
Grazing Incidence ◽  
Curve Analysis ◽  
Epitaxial Layers ◽  
Angular Divergence ◽  
X Ray Diffraction ◽  
Rocking Curve ◽  
Experimental Performance ◽  
Low Background ◽  
X Ray ◽  
Angle Scattering

ABSTRACTReplacement of the pinhole collimator on a double axis X-ray diffractometer with a device incorporating a channel-cut crystal permits the beam to be pre-conditioned in angular divergence. We examine the merits of such devices, known as channel-cut collimators (CCC's), of different materials and reflections. The experimental performance of InP 004 and Si 022 CCC's is presented.With a reference crystal on the first axis, set in the dispersive peometry with respect to the CCC, conditioning in wavelength spread is achieved. Dispersion broadening is effectively eliminated and no resetting of the reference crystal is required when changing specimen materials or reflections. The devices have extremely low background and reduced Bragg tails. Application of the 4-reflection CCC to rocking curve analysis of thin epitaxial layers, ultra-low angle scattering from biological systems, grazing incidence reflectometry and triple axis diffraction of semi-conductors is discussed.

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