| Autor: |
Kucherov, O. P., Rud, A. D. |
| Předmět: |
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| Zdroj: |
Molecular Crystals & Liquid Crystals; 2018, Vol. 674 Issue 1, p40-47, 8p |
| Abstrakt: |
Built on electron beam shifting effect, the picoscope with resolution of 10 picometers demonstrates fascinating ability to directly visualize the density of electron clouds molecules together with chemical bonds. It results in the appearance of long-awaited visual molecular technologies. Densitometry of electron density is used to show the structure of crystalline graphite with visualization of σ-bonds formed by overlaping the sp2 chemical bonds of carbon atoms, and a system of weak π-bonds that connects the layers of graphite. The article also presents new superdense two-layered diamond-like carbon allotrope, which is proposed to designate rudenite. In the rudenite, each carbon atom forms four strong sp3 chemical bonds as in the structure of diamond, but since the layers are pressed at a distance of 100 picometers, it should have a density of 1.3 times greater than that of diamond. [ABSTRACT FROM AUTHOR] |
| Databáze: |
Complementary Index |
| Externí odkaz: |
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