scholarly journals The Lewis superacid Al[N(C6F5)2]3 and its higher homolog Ga[N(C6F5)2]3 – structural features, theoretical investigation and reactions of a metal amide with higher fluoride ion affinity than SbF5

2018 ◽  
Vol 9 (1) ◽  
pp. 245-253 ◽  
Author(s):  
J. F. Kögel ◽  
D. A. Sorokin ◽  
A. Khvorost ◽  
M. Scott ◽  
K. Harms ◽  
...  
Keyword(s):  
Theoretical Investigation ◽  
Structural Features ◽  
Fluoride Ion

Lewis superacid with higher fluoride ion affinity than SbF5.

Electrochemical, Thermal, and Structural Features of BaF2–SnF2 Fluoride-Ion Electrolytes

2021 ◽  
Author(s):  
Kazuhiro Mori ◽  
Atsushi Mineshige ◽  
Takuro Emoto ◽  
Maiko Sugiura ◽  
Takashi Saito ◽  
...  
Keyword(s):  
Structural Features ◽  
Fluoride Ion

Theoretical investigation on base-induced 1,2-eliminations in the model system fluoride ion + fluoroethane. The role of the base as a catalyst

1993 ◽  
Vol 115 (20) ◽  
pp. 9160-9173 ◽  
Author(s):  
F. Matthias Bickelhaupt ◽  
Evert Jan Baerends ◽  
Nico M. M. Nibbering ◽  
Tom Ziegler
Keyword(s):  
Theoretical Investigation ◽  
Model System ◽  
Fluoride Ion

Theoretical investigation on the one- and two-photon responsive behavior of fluoride ion probes based on diketopyrrolopyrrole and its π-expanded derivatives

2016 ◽  
Vol 40 (6) ◽  
pp. 4899-4910 ◽  
Author(s):  
Li Zhang ◽  
Lu-Yi Zou ◽  
Jing-Fu Guo ◽  
Ai-Min Ren
Keyword(s):  
Theoretical Investigation ◽  
Photon Absorption ◽  
Fluoride Anion ◽  
Fluoride Ion ◽  
Reaction Products ◽  
Absorption Properties ◽  
Two Photon Absorption ◽  
Two Photon ◽  
Responsive Behavior ◽  
The One

The intrinsic two-photon absorption properties of the studied fluoride anion probes and their corresponding reaction products are systematically investigated.

scholarly journals The key role of the composition and structural features in fluoride ion conductivity in tysonite Ce1−xSrxF3−x solid solutions

2017 ◽  
Vol 46 (11) ◽  
pp. 3761-3769 ◽  
Author(s):  
Belto Dieudonné ◽  
Johann Chable ◽  
Monique Body ◽  
Christophe Legein ◽  
Etienne Durand ◽  
...  
Keyword(s):  
Ionic Conductivity ◽  
Solid Solutions ◽  
Structural Features ◽  
Ion Conductivity ◽  
Fluoride Ion

Evolution with x of RT ionic conductivity of RE1−xAExF3−x showing that Ce1−xSrxF3−x is the best F− tysonite conductor is discussed.

scholarly journals Synthesis, structural features, antibacterial behaviour and theoretical investigation of two new manganese(III) Schiff base complexes

Polyhedron ◽  
2018 ◽  
Vol 151 ◽  
pp. 407-416 ◽  
Author(s):  
Pranajit Paul ◽  
Kanti R.N. Bhowmik ◽  
Subhadip Roy ◽  
Dibakar Deb ◽  
Nandita Das ◽  
...  
Keyword(s):  
Schiff Base ◽  
Theoretical Investigation ◽  
Structural Features ◽  
Schiff Base Complexes

Electron microscopy and diffraction studies of polyimides

1983 ◽  
Vol 41 ◽  
pp. 28-29
Author(s):  
O.C. de Hodgins ◽  
K. R. Lawless ◽  
R. Anderson
Keyword(s):  
Electron Microscopy ◽  
Electron Microscope ◽  
Structural Features ◽  
Inert Atmosphere ◽  
Polyimide Films ◽  
Resolution Electron ◽  
The Matrix ◽  
High Resolution Electron Microscope ◽  
Diffraction Patterns ◽  
Polymeric Samples

Commercial polyimide films have shown to be homogeneous on a scale of 5 to 200 nm. The observation of Skybond (SKB) 705 and PI5878 was carried out by using a Philips 400, 120 KeV STEM. The objective was to elucidate the structural features of the polymeric samples. The specimens were spun and cured at stepped temperatures in an inert atmosphere and cooled slowly for eight hours. TEM micrographs showed heterogeneities (or nodular structures) generally on a scale of 100 nm for PI5878 and approximately 40 nm for SKB 705, present in large volume fractions of both specimens. See Figures 1 and 2. It is possible that the nodulus observed may be associated with surface effects and the structure of the polymers be regarded as random amorphous arrays. Diffraction patterns of the matrix and the nodular areas showed different amorphous ring patterns in both materials. The specimens were viewed in both bright and dark fields using a high resolution electron microscope which provided magnifications of 100,000X or more on the photographic plates if desired.

Skeletal elements of crinoid echinoderms: High-resolution structural and microanalytical results

1983 ◽  
Vol 41 ◽  
pp. 194-195
Author(s):  
D. F. Blake ◽  
L. F. Allard ◽  
D. R. Peacor
Keyword(s):  
High Resolution ◽  
Marine Invertebrates ◽  
Sea Urchins ◽  
Structural Features ◽  
Sea Stars ◽  
High Resolution Tem ◽  
Relationship Of ◽  
The Relationship ◽  
Insight Into

Echinodermata is a phylum of marine invertebrates which has been extant since Cambrian time (c.a. 500 m.y. before the present). Modern examples of echinoderms include sea urchins, sea stars, and sea lilies (crinoids). The endoskeletons of echinoderms are composed of plates or ossicles (Fig. 1) which are with few exceptions, porous, single crystals of high-magnesian calcite. Despite their single crystal nature, fracture surfaces do not exhibit the near-perfect {10.4} cleavage characteristic of inorganic calcite. This paradoxical mix of biogenic and inorganic features has prompted much recent work on echinoderm skeletal crystallography. Furthermore, fossil echinoderm hard parts comprise a volumetrically significant portion of some marine limestones sequences. The ultrastructural and microchemical characterization of modern skeletal material should lend insight into: 1). The nature of the biogenic processes involved, for example, the relationship of Mg heterogeneity to morphological and structural features in modern echinoderm material, and 2). The nature of the diagenetic changes undergone by their ancient, fossilized counterparts. In this study, high resolution TEM (HRTEM), high voltage TEM (HVTEM), and STEM microanalysis are used to characterize tha ultrastructural and microchemical composition of skeletal elements of the modern crinoid Neocrinus blakei.

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