isolated double bond

简明释义

孤立双键

英英释义

例句

1.The stability of an isolated double bond is generally higher compared to conjugated systems.

与共轭体系相比，孤立双键的稳定性通常更高。

2.The presence of an isolated double bond can affect the reactivity of a molecule significantly.

一个孤立双键的存在可以显著影响分子的反应性。

3.In synthetic organic chemistry, creating an isolated double bond can be essential for the subsequent reactions.

在合成有机化学中，形成一个孤立双键对后续反应至关重要。

4.When analyzing the compound, we found that it contained an isolated double bond which contributed to its unique properties.

在分析该化合物时，我们发现它含有一个孤立双键，这使其具有独特的性质。

5.In organic chemistry, an isolated double bond is a double bond that is separated from other multiple bonds by at least one single bond.

在有机化学中，孤立双键是指至少由一个单键分隔开来的双键。

作文

In the realm of organic chemistry, understanding the structure and behavior of molecules is fundamental to grasping the intricacies of chemical reactions. One crucial concept in this field is the presence of an isolated double bond, which refers to a double bond between two carbon atoms that is not adjacent to any other double bonds. This structural feature can significantly influence the properties and reactivity of organic compounds. To illustrate the importance of isolated double bonds, let us explore their role in various chemical contexts.Firstly, isolated double bonds can be found in numerous organic compounds, including alkenes and certain types of fatty acids. For example, in the case of 1,4-hexadiene, the double bonds are separated by a single bond, making them isolated. This separation allows for unique geometric configurations, which can lead to different physical properties such as boiling points and solubility. The presence of isolated double bonds also affects the compound's reactivity; these bonds can undergo addition reactions more readily than double bonds that are part of conjugated systems.Moreover, isolated double bonds play a significant role in polymer chemistry. When polymers are synthesized from monomers containing isolated double bonds, the resulting materials exhibit distinct mechanical and thermal properties compared to those derived from monomers with conjugated double bonds. This difference arises because the isolated double bonds allow for greater flexibility in the polymer chains, leading to materials that can be tailored for specific applications, such as elastomers or rigid plastics.In biological systems, isolated double bonds are also of great importance. Many fatty acids contain isolated double bonds, which contribute to the fluidity of cell membranes. For instance, linoleic acid, an essential fatty acid, contains two isolated double bonds. The presence of these double bonds affects how closely the fatty acid chains can pack together, thereby influencing membrane properties such as permeability and fluidity. This is crucial for maintaining cellular integrity and function under varying physiological conditions.Furthermore, the study of isolated double bonds extends beyond simple hydrocarbons. In synthetic organic chemistry, chemists often manipulate isolated double bonds to create complex molecules through various reactions, such as hydrogenation or oxidation. These reactions can lead to the formation of new functional groups, allowing for the synthesis of diverse compounds used in pharmaceuticals, agrochemicals, and other industries.In conclusion, the concept of the isolated double bond is vital for understanding the behavior of organic molecules in both theoretical and practical contexts. From influencing the physical properties of compounds to playing a crucial role in biological systems and synthetic chemistry, isolated double bonds are a fundamental aspect of organic chemistry that warrants careful study. As we continue to explore the complexities of molecular structures and reactivity, the significance of isolated double bonds will undoubtedly remain a focal point for chemists and researchers alike.

在有机化学领域，理解分子的结构和行为是掌握化学反应复杂性的基础。一个关键概念是存在的孤立双键，它指的是两个碳原子之间的双键，它不与任何其他双键相邻。这种结构特征可以显著影响有机化合物的性质和反应性。为了说明孤立双键的重要性，让我们探讨它们在各种化学背景中的作用。首先，孤立双键可以在许多有机化合物中找到，包括烯烃和某些类型的脂肪酸。例如，在1,4-己二烯的情况下，双键由单键分隔，使其成为孤立的。这种分离允许独特的几何构型，这可能导致不同的物理性质，如沸点和溶解度。孤立双键的存在还会影响化合物的反应性；这些键比属于共轭体系的双键更容易发生加成反应。此外，孤立双键在聚合物化学中也发挥着重要作用。当从含有孤立双键的单体合成聚合物时，所得到的材料与从含有共轭双键的单体衍生的材料相比，表现出不同的机械和热性能。这种差异的产生是因为孤立双键允许聚合物链具有更大的灵活性，从而导致可以针对特定应用（如弹性体或刚性塑料）进行定制的材料。在生物系统中，孤立双键同样至关重要。许多脂肪酸含有孤立双键，这有助于细胞膜的流动性。例如，亚油酸是一种必需脂肪酸，含有两个孤立双键。这些双键的存在影响脂肪酸链的紧密堆积方式，从而影响膜的性质，如通透性和流动性。这对于在不同生理条件下维持细胞的完整性和功能至关重要。此外，孤立双键的研究超越了简单的烃类。在合成有机化学中，化学家常常通过各种反应（如氢化或氧化）操纵孤立双键以创建复杂的分子。这些反应可以导致新功能团的形成，从而合成用于药物、农用化学品和其他行业的多种化合物。总之，孤立双键的概念对于理解有机分子在理论和实践背景下的行为至关重要。从影响化合物的物理性质到在生物系统和合成化学中发挥关键作用，孤立双键是有机化学的一个基本方面，值得仔细研究。随着我们继续探索分子结构和反应性的复杂性，孤立双键的重要性无疑将继续成为化学家和研究人员关注的焦点。