delocalization energy

简明释义

非定域能

英英释义

例句

1.The concept of delocalization energy is crucial in understanding the stability of benzene due to its resonance structures.

理解苯的稳定性时，去局域化能量的概念至关重要，因为它与共振结构有关。

2.The higher the delocalization energy, the more stable the molecule is likely to be.

越高的去局域化能量，分子越可能更稳定。

3.In molecular orbital theory, delocalization energy plays a significant role in determining the electronic properties of conjugated systems.

在分子轨道理论中，去局域化能量在决定共轭系统的电子性质方面起着重要作用。

4.The delocalization energy associated with π electrons contributes to the color of many organic dyes.

与π电子相关的去局域化能量有助于许多有机染料的颜色。

5.Chemists often calculate delocalization energy to predict the reactivity of organic compounds.

化学家常常计算去局域化能量以预测有机化合物的反应性。

作文

Delocalization energy is an essential concept in the field of chemistry, particularly in the study of molecular structures and stability. It refers to the energy associated with the delocalization of electrons in a molecule. When electrons are not confined to a single bond or atom but are spread out over several atoms, they contribute to the overall stability of the molecule. This phenomenon is often observed in resonance structures, where multiple valid Lewis structures can be drawn for a single molecule. The actual structure of the molecule is a hybrid of these resonance forms, leading to lower energy and increased stability due to the spread of electron density. For example, consider benzene, a well-known aromatic compound. In benzene, the six carbon atoms form a ring, and the electrons in the double bonds are not localized between specific carbon atoms. Instead, they are delocalized across the entire ring structure. This delocalization results in a significant amount of delocalization energy (去局域化能量), making benzene more stable than it would be if the electrons were localized. The stability provided by delocalization energy is a key reason why many organic compounds exhibit aromaticity, which is a term used to describe the enhanced stability of cyclic structures with delocalized pi electrons.The concept of delocalization energy is not limited to aromatic compounds. It can also be found in conjugated systems, where alternating single and double bonds allow for the delocalization of π electrons. In such systems, the energy of the molecule is lowered due to the delocalization, contributing to its overall stability. For instance, in polyenes, which are molecules containing multiple conjugated double bonds, the delocalization energy plays a crucial role in defining their chemical properties and reactivity.Understanding delocalization energy is vital for chemists as it provides insight into the reactivity and stability of various compounds. Compounds with high delocalization energy tend to be more stable and less reactive, while those with low delocalization energy may be more prone to undergo chemical reactions. This knowledge is particularly important in the design of new materials and drugs, where stability and reactivity are critical factors.In conclusion, delocalization energy (去局域化能量) is a fundamental concept that helps explain the stability of molecules through the delocalization of electrons. By understanding how delocalization energy contributes to molecular stability, chemists can better predict the behavior of substances in various chemical reactions. As research continues, the implications of delocalization energy will undoubtedly play a significant role in advancing our understanding of chemistry and developing new technologies.

去局域化能量是化学领域中的一个重要概念，特别是在分子结构和稳定性的研究中。它指的是与分子中电子去局域化相关的能量。当电子不局限于单一的键或原子，而是分布在多个原子上时，它们会对分子的整体稳定性产生影响。这种现象通常在共振结构中观察到，在这种情况下，可以为单一分子绘制多个有效的路易斯结构。分子的实际结构是这些共振形式的混合，从而由于电子密度的分散而导致能量降低和稳定性增加。例如，考虑苯，这是一种著名的芳香化合物。在苯中，六个碳原子形成一个环，双键中的电子并不是局限于特定的碳原子之间。相反，它们在整个环结构中去局域化。这种去局域化导致了显著的delocalization energy（去局域化能量），使得苯比如果电子被局限时更稳定。delocalization energy提供的稳定性是许多有机化合物表现出芳香性的关键原因，芳香性是指具有去局域化π电子的环状结构的增强稳定性。delocalization energy的概念不仅限于芳香化合物。它也可以在共轭系统中找到，在这些系统中，交替的单键和双键允许π电子的去局域化。在这样的系统中，由于去局域化，分子的能量降低，从而有助于其整体稳定性。例如，在多烯中，含有多个共轭双键的分子，delocalization energy在定义它们的化学性质和反应性方面起着至关重要的作用。理解delocalization energy对化学家至关重要，因为它提供了关于各种化合物的反应性和稳定性的洞察。具有高delocalization energy的化合物往往更稳定且反应性较低，而具有低delocalization energy的化合物可能更容易发生化学反应。这一知识在新材料和药物的设计中尤为重要，因为稳定性和反应性是关键因素。总之，delocalization energy（去局域化能量）是一个基本概念，有助于通过电子的去局域化来解释分子的稳定性。通过理解delocalization energy如何促进分子稳定性，化学家可以更好地预测物质在各种化学反应中的行为。随着研究的持续，delocalization energy的影响无疑将在推动我们对化学的理解和开发新技术方面发挥重要作用。