Triangular complexes of molybdenum and tungsten containing a ?2-Se2 ligand: X-ray examination of W2(?3-Se)(?2-Se2)3(dtc)4, the first M3Se7 metal cluster complex

1991 ◽  
Vol 40 (5) ◽  
pp. 1110-1110
Author(s):  
A. V. Virovets ◽  
N. V. Podberezskaya ◽  
V. P. Fedin ◽  
M. N. Sokolov ◽  
O. A. Geras'ko ◽  
...  
Keyword(s):  
Metal Cluster ◽  
Cluster Complex ◽  
X Ray ◽  
And Tungsten

The synthesis and x-ray crystal structure of the hexanuclear metal cluster complex [Ir3Pt3(μ-CO)3(CO)3(η-C5Me5)3]

Polyhedron ◽  
1984 ◽  
Vol 3 (9-10) ◽  
pp. 1093-1097 ◽  
Author(s):  
Mark J. Freeman ◽  
Anthony D. Miles ◽  
Martin Murray ◽  
A. Guy Orpen ◽  
F.Gordon A. Stone
Keyword(s):  
Crystal Structure ◽  
Metal Cluster ◽  
Cluster Complex ◽  
X Ray

scholarly journals Synthesis and Crystal Structure of a Novel Octahedral Fe4Cr2 Transition Metal Cluster Complex Cp2Cr2Fe4(CO)12(μ6-O)

1999 ◽  
Vol 23 (6) ◽  
pp. 388-389
Author(s):  
Li-Cheng Song ◽  
Wen-Qi Gao ◽  
Xiao-Ying Huang
Keyword(s):  
Crystal Structure ◽  
Transition Metal ◽  
Diffraction Analysis ◽  
Metal Cluster ◽  
Cluster Complex ◽  
X Ray Diffraction ◽  
Synthesis And Crystal Structure ◽  
X Ray ◽  
Transition Metal Cluster

Reaction of Cp(OC)2Cr=S = Cr(CO)2Cp with Fe3(CO)12 affords an encapsulated μ6-O octahedral Fe4Cr2 cluster complex Cp2Cr2Fe4(CO)12(μ6-O), whose crystal structure is determined by X-ray diffraction analysis.

Digital x-ray mapping of nanometer-size supported bimetallic catalysts

1988 ◽  
Vol 46 ◽  
pp. 530-531
Author(s):  
L. T. Germinario
Keyword(s):  
Background Radiation ◽  
Metal Cluster ◽  
Single Element ◽  
Beam Diameter ◽  
X Rays ◽  
X Ray ◽  
Major Interest ◽  
Induced Changes

Understanding the role of metal cluster composition in determining catalytic selectivity and activity is of major interest in heterogeneous catalysis. The electron microscope is well established as a powerful tool for ultrastructural and compositional characterization of support and catalyst. Because the spatial resolution of x-ray microanalysis is defined by the smallest beam diameter into which the required number of electrons can be focused, the dedicated STEM with FEG is the instrument of choice. The main sources of errors in energy dispersive x-ray analysis (EDS) are: (1) beam-induced changes in specimen composition, (2) specimen drift, (3) instrumental factors which produce background radiation, and (4) basic statistical limitations which result in the detection of a finite number of x-ray photons. Digital beam techniques have been described for supported single-element metal clusters with spatial resolutions of about 10 nm. However, the detection of spurious characteristic x-rays away from catalyst particles produced images requiring several image processing steps.

scholarly journals ZnWO4 Nanoparticle Scintillators for High Resolution X-ray Imaging

Nanomaterials ◽  
2020 ◽  
Vol 10 (9) ◽  
pp. 1721
Author(s):  
Heon Yong Jeong ◽  
Hyung San Lim ◽  
Ju Hyuk Lee ◽  
Jun Heo ◽  
Hyun Nam Kim ◽  
...  
Keyword(s):  
Particle Size ◽  
Zinc Oxide ◽  
High Resolution ◽  
Tungsten Oxide ◽  
Spatial Resolution ◽  
High Spatial Resolution ◽  
X Ray ◽  
X Ray Imaging ◽  
Average Size ◽  
And Tungsten

The effect of scintillator particle size on high-resolution X-ray imaging was studied using zinc tungstate (ZnWO4) particles. The ZnWO4 particles were fabricated through a solid-state reaction between zinc oxide and tungsten oxide at various temperatures, producing particles with average sizes of 176.4 nm, 626.7 nm, and 2.127 μm; the zinc oxide and tungsten oxide were created using anodization. The spatial resolutions of high-resolution X-ray images, obtained from utilizing the fabricated particles, were determined: particles with the average size of 176.4 nm produced the highest spatial resolution. The results demonstrate that high spatial resolution can be obtained from ZnWO4 nanoparticle scintillators that minimize optical diffusion by having a particle size that is smaller than the emission wavelength.

Imido complexes of molybdenum and tungsten(VI); X-ray crystal structure of cis-(η1-CF3SO3)2 W(NBut)2(NH2But)2

Polyhedron ◽  
1989 ◽  
Vol 8 (24) ◽  
pp. 2947-2949 ◽  
Author(s):  
Andreas A. Danopoulos ◽  
Geoffrey Wilkinson ◽  
Michael B. Hursthouse ◽  
Bilquis Hussain
Keyword(s):  
Crystal Structure ◽  
X Ray ◽  
Imido Complexes ◽  
And Tungsten
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