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Updated: May 27, 2025

Comparison of Two Different Synthesis Methods of Single Crystals of Superconducting Uranium Ditelluride
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Comparison of Two Different Synthesis Methods of Single Crystals of Superconducting Uranium Ditelluride

Published on: July 8, 2021

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セレクティブ・デュテレーションを用いた熱溶性結晶の操作

Alexander Angeloski1,2, Pablo Galaviz1, Richard A Mole1

  • 1Australian Nuclear Science Technology Organisation, Lucas Heights, New South Wales 2234, Australia.

Journal of the American Chemical Society
|February 20, 2025
PubMed
まとめ

ニッケル (II) ビス (イソプロピル) ディチオカルバマートの選択的デュテレーションにより,デュテリアムの置換により,熱塩素の相移行がより高い温度に移行することが明らかになった. これはデュテリウムを強調しています.

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¹³C NMR: Distortionless Enhancement by Polarization Transfer (DEPT)

When proton-coupled carbon-13 spectra are simplified by a broadband proton decoupling technique, structural information about the coupled protons is lost. Distortionless enhancement by polarization transfer (DEPT) is a technique that provides information on the number of hydrogens attached to each carbon in a molecule. While the DEPT experiment utilizes complex pulse sequences, the pulse delay and flip angle are specifically manipulated. The resulting signals have different phases depending on...
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Chemical Shift: Internal References and Solvent Effects

In an NMR sample, precise measurement of the absolute absorption frequencies of nuclei is difficult. A standard internal reference compound is added, and the frequency difference between the reference signal and sample signals is measured.
The internal reference compound generally used in NMR spectroscopy is tetramethylsilane (TMS). TMS is preferred because it is chemically inert, soluble in NMR solvents, and easily removable. Also, the highly shielded methyl protons in TMS yield an intense...
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Sublimation

Sublimation is the direct transformation of a solid to a gaseous state. For instance, at standard pressure and room temperature, solid carbon dioxide sublimes to gaseous carbon dioxide. The phase diagram depicts the conditions required for sublimation. This process occurs at the solid-gas phase boundary and is not observed above the triple point of the substance. The reverse of sublimation is called deposition, where a gaseous substance condenses directly into a solid. Sublimation and...
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