scholarly journals Fluorometric Study on the Metal Chelates of Flavone Derivatives. III. Crystal Structures of 4'-Bromo-3-hydroxyflavone and 4'-Bromo-5-hydroxyflavone

1974 ◽  
Vol 22 (6) ◽  
pp. 1219-1226 ◽  
Author(s):  
TOKISHI HAYASHI ◽  
SATOSHI KAWAI ◽  
TAKEO OHNO ◽  
YOICHI IITAKA ◽  
TOSHIO AKIMOTO
Keyword(s):  
Crystal Structures ◽  
Metal Chelates ◽  
Flavone Derivatives ◽  
Fluorometric Study

The crystal structures and hydrogen-bond properties of three 3-hydroxy-flavone derivatives

1986 ◽  
Vol 144 (1-2) ◽  
pp. 155-167 ◽  
Author(s):  
M.C. Etter ◽  
Z. Urbańczyk-Lipkowska ◽  
S. Baer ◽  
P.F. Barbara
Keyword(s):  
Hydrogen Bond ◽  
Crystal Structures ◽  
Bond Properties ◽  
Hydroxy Flavone ◽  
Flavone Derivatives

Electrochemical synthesis of adducts of 2-aminopyridine or methanol in metal chelates of a N,N,N-tridentate Schiff base ligand. X-ray crystal structures of the Ni(II) and Zn(II) derivatives

Polyhedron ◽  
2003 ◽  
Vol 22 (10) ◽  
pp. 1335-1340 ◽  
Author(s):  
D.A. Garnovskii ◽  
M.F.C. Guedes da Silva ◽  
M.N. Kopylovich ◽  
A.D. Garnovskii ◽  
J.J.R. Fraústo da Silva ◽  
...  
Keyword(s):  
Schiff Base ◽  
Crystal Structures ◽  
Schiff Base Ligand ◽  
Electrochemical Synthesis ◽  
Metal Chelates ◽  
X Ray ◽  
Tridentate Schiff Base

Crystal structures and physicochemical studies of some novel divalent and trivalent transition metal chelates of N-morpholine-N'-benzoylthiourea

2020 ◽  
pp. 129791
Author(s):  
Kevin I.Y. Ketchemen ◽  
Malik Dilshad Khan ◽  
Sixberth Mlowe ◽  
Matthew P. Akerman ◽  
Inigo Vitorica-Yrezabal ◽  
...  
Keyword(s):  
Transition Metal ◽  
Crystal Structures ◽  
Metal Chelates ◽  
Transition Metal Chelates ◽  
Physicochemical Studies

Pollutant Identification by Selected Area Electron Diffraction

1974 ◽  
Vol 32 ◽  
pp. 532-533
Author(s):  
R. E. Ferrell ◽  
G. G. Paulson ◽  
C. W. Walker
Keyword(s):  
Thermal Treatment ◽  
Electron Diffraction ◽  
Sample Preparation ◽  
Crystal Structures ◽  
Water Samples ◽  
Environmental Samples ◽  
Short Review ◽  
Selected Area Electron Diffraction ◽  
Multiple Component

Selected area electron diffraction (SAD) has been used successfully to determine crystal structures, identify traces of minerals in rocks, and characterize the phases formed during thermal treatment of micron-sized particles. There is an increased interest in the method because it has the potential capability of identifying micron-sized pollutants in air and water samples. This paper is a short review of the theory behind SAD and a discussion of the sample preparation employed for the analysis of multiple component environmental samples.

The Imaging of Crystal Structures and Crystal Defects

1978 ◽  
Vol 36 (3) ◽  
pp. 207-217
Author(s):  
J.M. Cowley
Keyword(s):  
Electron Microscope ◽  
Crystal Structures ◽  
Phase Contrast ◽  
Crystal Defects ◽  
Atom Density ◽  
Lack Of Information ◽  
Spatial Frequencies

The problem of "understandinq" electron microscope imaqes becomes more acute as the resolution is improved. The naive interpretation of an imaqe as representinq the projection of an atom density becomes less and less appropriate. We are increasinqly forced to face the complexities of coherent imaqinq of what are essentially phase objects. Most electron microscopists are now aware that, for very thin weakly scatterinq objects such as thin unstained bioloqical specimens, hiqh resolution imaqes are best obtained near the optimum defocus, as prescribed by Scherzer, where the phase contrast imaqe qives a qood representation of the projected potential, apart from a lack of information on the lower spatial frequencies. But phase contrast imaqinq is never simple except in idealized limitinq cases.

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