cis form

简明释义

顺式

英英释义

例句

1.In organic synthesis, converting a compound from its trans to its cis form 顺式形式 can sometimes be a challenging task.

在有机合成中，将化合物从其反式转化为cis form 顺式形式有时可能是一项具有挑战性的任务。

2.The cis form 顺式形式 of the compound has a lower melting point than its trans counterpart.

该化合物的cis form 顺式形式的熔点低于其反式对应物。

3.When discussing fatty acids, the cis form 顺式形式 is known to be more beneficial for health compared to the trans form.

在讨论脂肪酸时，cis form 顺式形式被认为比反式形式对健康更有益。

4.In chemistry, the molecule exists in both cis and trans forms, with the cis form 顺式形式 having similar groups on the same side.

在化学中，分子存在于顺式和反式两种形式，其中cis form 顺式形式的相似基团位于同一侧。

5.The configuration of the double bond can significantly affect the properties of the compound, especially when it is in the cis form 顺式形式.

双键的构型可以显著影响化合物的性质，尤其是当它处于cis form 顺式形式时。

作文

In the world of chemistry, understanding molecular structures is crucial for grasping how substances interact and behave. One important concept in this field is the notion of stereoisomers, which are compounds that have the same molecular formula but differ in the spatial arrangement of atoms. Among these stereoisomers, a specific type known as the cis form plays a significant role in various chemical reactions and biological processes. The term cis form refers to a configuration where similar or identical substituents are positioned on the same side of a double bond or a ring structure in a molecule.To illustrate this concept, consider the example of 2-butene, which can exist in two different forms: the cis form and the trans form. In the cis form, the two methyl groups (–CH3) are located on the same side of the double bond, while in the trans form, they are on opposite sides. This seemingly simple change in arrangement leads to significant differences in properties. The cis form of 2-butene has a higher boiling point compared to its trans counterpart due to the dipole-dipole interactions caused by the proximity of the methyl groups. This property is essential in various applications, including the production of certain polymers and pharmaceuticals.Furthermore, the cis form is not only relevant in synthetic chemistry but also in biological systems. For instance, fatty acids can exist in both cis and trans configurations. Most naturally occurring unsaturated fatty acids are found in the cis form, which contributes to their fluidity and functionality in cell membranes. On the other hand, trans fatty acids, which are often produced through industrial processes, have been linked to various health issues, including heart disease. This highlights the importance of the cis form in nutrition and health, as the consumption of cis form fatty acids is generally associated with better health outcomes.The significance of the cis form extends beyond chemistry and biology into materials science and engineering. For example, the mechanical properties of polymers can be influenced by the stereochemistry of their monomer units. Polymers made from cis form monomers may exhibit different elasticity and strength compared to those made from trans monomers. This understanding allows scientists and engineers to tailor materials for specific applications, enhancing performance and durability.In conclusion, the concept of the cis form is vital across multiple fields, including chemistry, biology, and materials science. By recognizing how the spatial arrangement of atoms affects properties and behaviors, we can better understand the complexities of molecular interactions and their implications. Whether it is in the synthesis of new compounds, the study of biological functions, or the development of advanced materials, the cis form remains a fundamental aspect that continues to inspire research and innovation. As we delve deeper into the world of molecular structures, the significance of the cis form will undoubtedly become even more pronounced, paving the way for future discoveries and advancements.

在化学的世界中，理解分子结构对于掌握物质的相互作用和行为至关重要。该领域中的一个重要概念是立体异构体，即具有相同分子式但在原子空间排列上不同的化合物。在这些立体异构体中，一种特定类型被称为顺式形式，它在各种化学反应和生物过程中发挥着重要作用。术语顺式形式指的是在分子中的双键或环结构上，相似或相同的取代基位于同一侧的构型。为了说明这一概念，可以考虑2-丁烯的例子，它可以以两种不同的形式存在：顺式形式和反式形式。在顺式形式中，两个甲基基团（–CH3）位于双键的同一侧，而在反式形式中，它们位于对侧。这种看似简单的排列变化导致了显著的性质差异。2-丁烯的顺式形式的沸点比其反式形式更高，这归因于由于甲基基团的接近而产生的偶极-偶极相互作用。这一性质在某些聚合物和药物的生产中至关重要。此外，顺式形式不仅在合成化学中相关，而且在生物系统中也很重要。例如，脂肪酸可以以顺式和反式构型存在。大多数自然存在的不饱和脂肪酸以顺式形式存在，这有助于它们在细胞膜中的流动性和功能。另一方面，反式脂肪酸通常通过工业过程产生，与多种健康问题（包括心脏病）有关。这突显了顺式形式在营养和健康中的重要性，因为消费顺式形式的脂肪酸通常与更好的健康结果相关。顺式形式的重要性超越了化学和生物学，延伸到材料科学和工程领域。例如，聚合物的机械性能可能会受到其单体单位立体化学的影响。由顺式形式单体制成的聚合物可能表现出不同的弹性和强度，与由反式单体制成的聚合物相比。这一认识使科学家和工程师能够根据特定应用定制材料，提高性能和耐用性。总之，顺式形式的概念在多个领域中至关重要，包括化学、生物学和材料科学。通过认识原子的空间排列如何影响性质和行为，我们可以更好地理解分子相互作用的复杂性及其影响。无论是在合成新化合物、研究生物功能还是开发先进材料方面，顺式形式始终是一个基本方面，继续激励着研究和创新。随着我们深入分子结构的世界，顺式形式的重要性无疑会变得更加明显，为未来的发现和进步铺平道路。