Results 301 to 310 of about 636,871 (343)
Some of the next articles are maybe not open access.
2006
Abstract Hydrogen atoms are important in chemistry, yet they are difficult to localize in X-ray structures. Electron density is measured by X-ray diffraction, and hydrogen has only one electron, which is not located at the nucleus. Therefore, hydrogen atoms are notoriously difficult to detect with X-ray diffraction methods.
openaire +1 more source
Abstract Hydrogen atoms are important in chemistry, yet they are difficult to localize in X-ray structures. Electron density is measured by X-ray diffraction, and hydrogen has only one electron, which is not located at the nucleus. Therefore, hydrogen atoms are notoriously difficult to detect with X-ray diffraction methods.
openaire +1 more source
Atomic Physics: Atomic hydrogen source
Physics Bulletin, 1985Hydrogen is often described as the Rosetta stone of modern physics. The regularity and systematics of its spectrum led Bohr to his quantum theory of atomic structure, and the continued exploration of the precise nature and position of its spectral lines has provided searching tests for quantum electrodynamics and new accurate values for fundamental ...
openaire +1 more source
Direct Photocatalyzed Hydrogen Atom Transfer (HAT) for Aliphatic C–H Bonds Elaboration
Chemical Reviews, 2022Luca Capaldo +2 more
exaly
Well-Defined Materials for Heterogeneous Catalysis: From Nanoparticles to Isolated Single-Atom Sites
Chemical Reviews, 2020Zhi Li, Yiwei Liu, Xing Cao
exaly
Single-Atom (Iron-Based) Catalysts: Synthesis and Applications
Chemical Reviews, 2021Baljeet Singh +2 more
exaly