منابع مشابه
Single-molecule chemical reactions tracked at the atomic-bond level.
On the right track: Recent advances in noncontact atomic force microscopy (nc-AFM) have enabled the bond-resolved imaging of reaction pathways. In particular, unprecedented insights into complex enediyne cyclization cascades on silver surfaces were gained by single-molecule imaging.
متن کاملThe Chemical Bond
Theories of the chemical bond aim to explain the structures and stabilities of molecules, and different theories aim for different levels of explanation. The most important theories are those that give simple explanations for the structures and stabilities of the most stable molecules ; broadly speaking, those that we find in bottles on the shelf of a laboratory. However, as experimental chemis...
متن کاملGenerating giant and tunable nonlinearity in a macroscopic mechanical resonator from a single chemical bond
Nonlinearity in macroscopic mechanical systems may lead to abundant phenomena for fundamental studies and potential applications. However, it is difficult to generate nonlinearity due to the fact that macroscopic mechanical systems follow Hooke's law and respond linearly to external force, unless strong drive is used. Here we propose and experimentally realize high cubic nonlinear response in a...
متن کاملDynamic breaking of a single gold bond
While one might assume that the force to break a chemical bond gives a measure of the bond strength, this intuition is misleading. If the force is loaded slowly, thermal fluctuations may break the bond before it is maximally stretched, and the breaking force will be less than the bond can sustain. Conversely, if the force is loaded rapidly it is more likely that the maximum breaking force is me...
متن کاملThe Representation of the Chemical Bond in Quantum Chemical Calculations
The mathematical representation of chemical bonds in molecules is discussed. The molecule is viewed as a system of weakly interacting chemical bonds. The intrabond problems and the averaged electrostatic interbond interactions are handled at the . zeroth order, while the small interbond delocalization and dispersion effects are taken into account on the basis of the perturbation theory. A speci...
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ژورنال
عنوان ژورنال: Physical Review Letters
سال: 2020
ISSN: 0031-9007,1079-7114
DOI: 10.1103/physrevlett.124.196101