DESHIELDING Meaning and
Definition
-
Deshielding refers to a phenomenon in chemistry and spectroscopy where an atom or a group of atoms experiences a decrease in its shielding effect due to the presence of neighboring atoms or groups. Shielding, in this context, refers to the ability of an electron cloud or an electron-donating group to protect a nucleus from the influence of external magnetic fields. Deshielding, thus, represents the reduction in this shielding effect, leading to a change in the chemical or spectroscopic properties of the atom or group.
In nuclear magnetic resonance (NMR) spectroscopy, deshielding is particularly relevant. It occurs when an electron-withdrawing or electron-attracting group is present near a nucleus, which results in a shift in the resonance frequency of the nucleus. This shift is observed as a change in the chemical shift value in an NMR spectrum. Deshielding can be a result of various factors, such as electronegativity differences between atoms, electronic delocalization, or through inductive effects.
The concept of deshielding is also applicable in other spectroscopic techniques such as infrared (IR) and electron spin resonance (ESR) spectroscopy, where external magnetic fields may influence the energy levels and frequencies observed.
Overall, deshielding describes the reduction in shielding effect experienced by an atom or group in the presence of nearby atoms or groups, resulting in altered chemical or spectroscopic properties.
Common Misspellings for DESHIELDING
- seshielding
- xeshielding
- ceshielding
- feshielding
- reshielding
- eeshielding
- dwshielding
- dsshielding
- ddshielding
- drshielding
- d4shielding
- d3shielding
- deahielding
- dezhielding
- dexhielding
- dedhielding
- deehielding
- dewhielding
- desgielding
- desbielding
Etymology of DESHIELDING
The word "deshielding" is derived from the combination of two separate words: "de-" and "shielding".
The prefix "de-" is a Latin-derived prefix meaning "undoing" or "removal". It is commonly used to indicate a reversal or negation of the base word it is attached to.
The word "shielding" is derived from the Old English word "scield" (pronounced "shēld"), which refers to a protective barrier, often made of metal or wood, used to defend against attacks or dangers.
Therefore, when "de-" is combined with "shielding", it creates the word "deshielding", which implies the action of removing or undoing a shield or protective barrier. In various contexts, "deshielding" can refer to the process of reducing or eliminating the effect of shielding or protection.
Infographic
Add the infographic to your website:
