TAILIEUCHUNG - Lecture Organic chemistry - Chapter 3: Radical halogenation

Chapter 3 provides knowledge of radical halogenation. The main contents of this chapter include all of the following: Radical halogenation and bond strength, bond dissociation energy tables, C-H bond strengths, structure of alkyl radicals, hyperconjugation, more neighboring bonds: more hyperconjugation, radical halogenation: methane and chlorine,. | Chapter 3: Radical Halogenation O O O O N 7/29/2015 © Univesity of California 1 The first free flight of NASA’s X-43A hypersonic research aircraft. Most supersonic aircraft produce exhaust gases containing molecules such as nitric oxide (NO), whose radical reactions are destructive to the Earth’s stratospheric ozone layer. In the 1970s the United States abandoned plans to build a fleet of supersonic aircraft (SSTs, or supersonic transports) for just this reason. In contrast, the X-43A is hydrogen fueled, posing no risk to stratospheric ozone, and may represent the first step toward the development of environmentally acceptable high-speed flight Radical Halogenation And Bond Strength Reactions require bond breaking and bond making Bond strengths: homolytic cleavage radicals ∆H = DHº = Bond dissociation energy (kcal mol-1) This process contrasts with heterolytic cleavage A B A B + - + A B A· B + For example: H2O + H2O H3O + OH + - · ∆H facile but H OH, DHº = +119 Example: Calculate .

• Hoá học
• Organic chemistry
• Lecture Organic chemistry
• Hóa học hữu cơ
• Bài giảng Hóa học hữu cơ
• Radical halogenation
• Bond strength
• Structure of alkyl radicals
• In this workbook
• experiments are elaborated using small scale glassware and equipments from a Small Lab Kit
• developed at the Department of Chemistry
• Faculty of Science
• Chulalongkorn University in Thailand
• This Small Lab Kit was created as a result of the research project entitled “Chemistry Laboratory Based on Chemical Safety and Pollution Minimization” sponsored by Thai Research Fund (RDG 3 07 2543)
• One of the outcomes of this project is the organic laboratory book entitled “Organic Chemistry Laboratory Based on Chemical Safety and Pollution Minimization” written in Thai by professors from 7 universities in this project
• They compiled
• adjusted and tested the experiments taken from several traditional organic chemistry laboratory books using the prototype of Small Lab Kit
• Currently
• some selected experiments from this Thai organic chemistry laboratory text have further been modified
• rewritten and edited in English as appeared in this workbook
• Some experiments ar
• Ebook Organic chemistry
• Nucleophilic substitution
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• nucleophilic addition
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