chair conformation

简明释义

椅式构象

英英释义

例句

1.The energy barrier between the chair conformation (椅式构象) and the boat conformation is relatively low.

在chair conformation（椅式构象）和船式构象之间的能量障碍相对较低。

2.The chair conformation (椅式构象) allows for the lowest energy state in cyclohexane derivatives.

对于环己烷衍生物，chair conformation（椅式构象）允许最低能量状态。

3.In organic chemistry, understanding the chair conformation (椅式构象) of cyclohexane is essential for predicting its stability.

在有机化学中，理解环己烷的chair conformation（椅式构象）对预测其稳定性至关重要。

4.During an exam, students often struggle with questions about chair conformation (椅式构象) and its implications.

在考试中，学生们常常对关于chair conformation（椅式构象）及其影响的问题感到困惑。

5.When drawing molecular structures, it's important to represent the chair conformation (椅式构象) accurately.

在绘制分子结构时，准确表示chair conformation（椅式构象）是很重要的。

作文

In the study of organic chemistry, understanding molecular structures is crucial for predicting the behavior and reactivity of compounds. One of the most important concepts in this field is the concept of chair conformation, which refers to a specific three-dimensional arrangement of atoms in cyclohexane and its derivatives. The chair conformation is significant because it minimizes steric strain and allows for the most stable configuration of the molecule. Cyclohexane, a six-membered carbon ring, can adopt several different shapes, but the chair conformation is the most stable due to its ability to position hydrogen atoms in a way that reduces repulsion between them. In this conformation, the carbon atoms are arranged in a way that resembles a chair, with alternating carbon atoms above and below the plane of the ring. This unique arrangement allows for the hydrogen atoms to be positioned either axial (sticking up or down from the ring) or equatorial (lying flat against the ring). The stability of the chair conformation is not only important for cyclohexane but also for many other cyclic compounds. When substituents are added to the cyclohexane ring, the choice between axial and equatorial positions becomes crucial. For example, larger substituents prefer the equatorial position in the chair conformation to minimize steric hindrance with other axial substituents. This preference can significantly influence the chemical properties and reactivity of the compound. To visualize the chair conformation, chemists often use molecular models or drawings. These representations help in understanding how different substituents will interact with each other in space. Furthermore, when analyzing reactions involving cyclohexane derivatives, the chair conformation provides insight into the transition states and intermediates that may form during these reactions. In conclusion, the concept of chair conformation is fundamental in organic chemistry. It not only helps in understanding the stability of cyclohexane and its derivatives but also plays a critical role in predicting the outcomes of chemical reactions. As students and researchers delve deeper into the world of organic compounds, the importance of grasping the chair conformation cannot be overstated. By mastering this concept, one can gain valuable insights into molecular behavior and reactivity, paving the way for advancements in chemical research and applications.

在有机化学的研究中，理解分子结构对于预测化合物的行为和反应性至关重要。一个最重要的概念是椅式构象，它指的是环己烷及其衍生物中原子的特定三维排列。椅式构象之所以重要，是因为它最小化了立体应变，并允许分子以最稳定的配置存在。环己烷，一个六元碳环，可以采用几种不同的形状，但椅式构象是最稳定的，因为它能够将氢原子以减少相互之间排斥的方式排列。在这种构象中，碳原子以类似椅子的方式排列，交替的碳原子位于环的平面上下。这种独特的排列使得氢原子可以被定位为轴向（向上或向下）或赤道向（平躺在环上）。椅式构象的稳定性不仅对环己烷重要，对许多其他环状化合物也同样重要。当取代基添加到环己烷环上时，在椅式构象中选择轴向和赤道向的位置变得至关重要。例如，较大的取代基更倾向于在椅式构象中选择赤道向位置，以最小化与其他轴向取代基的立体干扰。这种偏好会显著影响化合物的化学性质和反应性。为了可视化椅式构象，化学家们通常使用分子模型或图纸。这些表示形式有助于理解不同的取代基如何在空间中相互作用。此外，在分析涉及环己烷衍生物的反应时，椅式构象提供了对可能在这些反应中形成的过渡态和中间体的洞察。总之，椅式构象的概念在有机化学中是基础性的。它不仅有助于理解环己烷及其衍生物的稳定性，还在预测化学反应的结果中发挥着关键作用。随着学生和研究人员深入探索有机化合物的世界，掌握椅式构象的重要性不容小觑。通过掌握这一概念，人们可以获得关于分子行为和反应性的宝贵见解，为化学研究和应用的进步铺平道路。