【大学の有機化学】わかりやすい電子軌道→分子軌道の形と書き方【結合次数・三重項酸素】

This is a follow-up to the previous Molecular Orbitals (Basics) video. Using the molecular orbitals of nitrogen and oxygen molecules as examples, we'll discuss how to determine the number of bonds and the differences in the energy states of oxygen molecules. In the first half, I'll discuss corrections to the previous video, new points, and introduce the concept of bond order. In the second half, I'll discuss natural oxygen molecules and reactive oxygen species based on the concept of molecular orbitals. I hope this video is simpler and easier to understand than a university lecture! 00:00 Introduction 02:35 Corrections to the previous video 07:29 Bond order 11:15 Molecular orbitals of nitrogen molecules *Corrections made (see description) 14:00 Shape of molecular orbitals derived from p-orbitals 15:42 Molecular orbitals of oxygen molecules 16:18 Energy states of oxygen molecules If you found this video helpful and would like to see more, please subscribe and rate it! ↓Subscribe↓    / @jzmedicalchannel1110   ■Questions and Answers Arising in the Video Q. Ultimately, which is more important: atomic orbitals, hybrid orbitals, or molecular orbitals? A. When considering bonds in organic chemistry, atomic orbitals and hybrid orbitals are almost always used. This is because the orbital shape is the simplest, and even if the number of atoms involved increases, it is considered in terms of the orbital shape of each atom, eliminating the need to consider the orbitals of the entire molecule as in molecular orbitals. Molecular orbitals accurately represent the electron accommodation and number of bonds, but they have the disadvantage that the orbital combinations become more complex as the number of atoms in a molecule increases. In most cases, it is sufficient to simply distinguish between σ and π bonds, so in reality, molecular orbitals are rarely used. Q. What forms do 0.5 and 1.5 double bonds ultimately exist? A. 1.5 and 2.5 bonds contain strong σ bonds, while the fractional (.5) bonds are π bonds. In other words, as long as the σ bonds are firmly bonded, as in benzene, the π bond can be located anywhere (we'll explain this in more detail in the resonance structure video). On the other hand, in a 0.5 bond, the σ bond of a single bond is incomplete, and there is no definite force (σ bond) that firmly binds the atoms like in a 1.5 or 2.5 bond. Therefore, the atoms can only exist in a separate atomic state. ■Video content correction The correct energy level for the molecular orbitals derived from the 2p orbital of a nitrogen molecule is that the σ bonding orbital is positioned first, followed by the π bonding orbital (the information written on the whiteboard is reversed). This is because the energy difference between the 2s and 2p orbitals of a nitrogen atom is lower than that of an oxygen atom, and the 2s-2p molecular orbital forms before the 2s orbitals form with each other. Conversely, because the energy difference between the 2s and 2p orbitals of the oxygen atom is large, the 2s and 2p orbitals interact independently. ■Related Videos [Organic Chemistry for University/Pharmacy Students] How to Create Molecular Orbitals / Electron Orbital Shape and Orientation    • 【大学の有機化学】わかりやすい電子軌道→分子軌道の作り方【電子軌道の形と向き】   [Organic Chemistry for University/Pharmacy Students] Creating sp2 and sp Hybrid Orbitals / How to Create Hybrid Orbitals (σ Bonds, π Bonds)    • 【大学の有機化学】わかりやすい sp2・sp混成軌道の作り方【混成軌道が苦手な人必見！】   [Organic Chemistry for University/Pharmacy Students] Creating sp3 Hybrid Orbitals from Electron Orbitals / How to Create Hybrid Orbitals    • 【大学の有機化学】わかりやすい sp3混成軌道の作り方【電子軌道が苦手な人必見！】   [Organic Chemistry for University/Pharmacy Students] Basics of Electron Configuration and Electron Orbitals (Atomic Orbitals) / How to Write and Insert Electron Orbitals    • 【大学の有機化学】分かりやすい電子配置と電子軌道（原子軌道）の書き方【混成軌道の土台】   [Organic Chemistry for University and Pharmaceutical Schools] IUPAC Nomenclature and Structural Formulas of Alkenes and Alkynes    • 【大学・薬学部の有機化学】わかりやすいアルケン・アルキンのIUPAC命名法と構造式の...   [Organic Chemistry Lectures for University and Pharmaceutical Schools] How to Write IUPAC Nomenclature and Structural Formulas of Alkanes    • 【大学・薬学部の有機化学】アルカンのIUPAC命名法と構造式の書き方【ジェイズ/J'...   ■Twitter   / jz6501   ■About J'z Medical Channel ・Broadcasting about medicine and illness, high school, college, and graduate school life, and lectures at the Faculty of Pharmacy! ・Aiming to post one video every 3-4 days, but will be increasing my editing speed! ・I want everyone to have a basic understanding of medicine and pharmacy and become interested in healthcare. ・My dream is to use this channel to help as many people as possible understand what medications are prescribed and what treatments are available when they become ill. ・Please subscribe and leave comments! ■J'z's Profile As a junior high school student, he resolved to become a pharmacist, but was only able to get into a low-tier public high school. However, through hard work and a tough environment, he overcame obstacles and managed to pass the entran...