关于计算扩展图的能量及其热力学特性,用于二碳化合物
Hafiz Muhammad Bilal1, Kiran Naz2, Sarfraz Ahmad2
1Department of Mathematics, Lahore Garrison University, Lahore, Pakistan.
Scientific reports
|February 13, 2025
概括
基于图形的描述器,包括Sombor和Banhatti Sombor能量,可以准确地预测六化 (BHC) 的热力学特性. 这为材料设计和工艺优化提供了快速可靠的方法.
科学领域:
- 计算化学的计算化学
- 材料科学 材料科学 材料科学
- 化学工程是化学工程的重要组成部分.
背景情况:
- 准确预测热力学特性对于化学过程设计和材料开发至关重要.
- 确定这些属性的传统方法可能是耗时和资源密集的.
- 基于图形的分子描述器为快速属性预测提供了一个潜在的替代方案.
研究的目的:
- 调查基于图形的描述符的有效性,特别是像Sombor和Banhatti Sombor能量这样的扩展能量,在预测甲 (BHC) 的热力学特性方面.
- 建立这些描述符和关键热力学参数之间的强烈相关性.
- 评估这种预测方法对实际应用的有用性.
主要方法:
- 应用了几种基于图形的描述符,包括Sombor能量和Banhatti Sombor能量.
- 计算的描述值与实验确定的热力学特性之间的相关性分析.
- 专注于诸如沸点,科瓦茨保留指数,形成和,八醇-水分割系数和BHC的非中心因子等属性.
主要成果:
- 在应用的基于图形的扩展能量和BHC的多种热力学特性之间观察到强烈的关系.
- 预测的属性包括沸点,科瓦茨保留指数,形成和,八醇-水分区系数和离心因子.
- 这些发现表明使用所选图形描述符的可预测性很高.
结论:
- 基于图形的描述符,特别是扩展能量,是预测热力学性质的快速可靠工具.
- 这种计算方法促进了高效的分子性质分析,并有助于材料设计.
- 该方法为优化工业化学过程和理解分子稳定性提供了一个新的途径.
相关概念视频
Combustion Energy: A Measure of Stability in Alkanes and Cycloalkanes
6.2K
The low reactivity in alkanes can be attributed to the non-polar nature of C–C and C–H σ bonds. Alkanes, therefore, were initially termed as “paraffins,” derived from the Latin words: parum, meaning “too little,” and affinis, meaning “affinity.”
Alkanes undergo combustion in the presence of excess oxygen and high-temperature conditions to give carbon dioxide and water. A combustion reaction is the energy source in natural gas, liquified...
Alkanes undergo combustion in the presence of excess oxygen and high-temperature conditions to give carbon dioxide and water. A combustion reaction is the energy source in natural gas, liquified...
6.2K
Standard Enthalpy of Formation
40.9K
Enthalpy changes are typically tabulated for reactions in which both the reactants and products are at the same conditions. A standard state is a commonly accepted set of conditions used as a reference point for the determination of properties under other different conditions. For chemists, the IUPAC standard state refers to materials under a pressure of 1 bar and solutions at 1 M and does not specify a temperature. Many thermochemical tables list values with a standard state of 1 atm. Because...
40.9K
π Molecular Orbitals of 1,3-Butadiene
8.5K
Conjugated dienes have lower heats of hydrogenation than cumulated and isolated dienes, making them more stable. The enhanced stabilization of conjugated systems can be understood from their π molecular orbitals.
The simplest conjugated diene is 1,3-butadiene: a four-carbon system where each carbon is sp2-hybridized and has an unhybridized p orbital that contains an unpaired electron. According to molecular orbital theory, atomic orbitals combine to form molecular orbitals such that the number...
The simplest conjugated diene is 1,3-butadiene: a four-carbon system where each carbon is sp2-hybridized and has an unhybridized p orbital that contains an unpaired electron. According to molecular orbital theory, atomic orbitals combine to form molecular orbitals such that the number...
8.5K
Frost Circles for Different Conjugated Systems
2.6K
The inscribed polygon method is consistent with Hückel’s 4n + 2 rule and helps to learn whether the given cyclic compound is aromatic or not. The compound is stable and aromatic if every bonding molecular orbital (MO) is completely filled with a pair of electrons. However, if the non-bonding or antibonding orbitals are filled with electrons, the compound is unstable and not aromatic. Consider the Frost circle diagrams for cycloalkenes containing 4 to 8 carbons.
2.6K
Structure of Benzene: Molecular Orbital Model
8.7K
According to the molecular orbital (MO) model, benzene has a planar structure with a regular hexagon of six sp2 hybridized carbons. As shown in Figure 1, each carbon is bonded to three other atoms with C–C–C and H–C–C bond angles of 120°. The C–H bond length is 109 pm, and the C–C bond length is 139 pm which is midway between the single bond length of sp3 hybridized carbons (154 pm) and sp2 hybridized carbons (133 pm).
8.7K
Stability of Conjugated Dienes
3.2K
Introduction
A comparison of the enthalpies of hydrogenation of dienes reveals that conjugated dienes release less heat on hydrogenation, rendering them more stable than their nonconjugated analogs.
A comparison of the enthalpies of hydrogenation of dienes reveals that conjugated dienes release less heat on hydrogenation, rendering them more stable than their nonconjugated analogs.
3.2K


