厦门大学化学化工学院：《有机化学》课程教学资源（课件讲稿，双语版）第六章 离子反应 —卤代烃的亲核取代和消除反应（6.1-6.9）Introduction

Chapter 6. loniGReactiohs mucleophilic Substitution and Elimination Reactions of Alkyl Halides 离争反一卤代烃的亲核取代 和消除反应

Chapter 6 Ionic Reactions — Nucleophilic Substitution and Elimination Reactions of Alkyl Halides 离子反应 —— 卤代烃的亲核取代 和消除反应

ORGANIC CHEMISTRY Chapter 6 6.1 ntroduction Department of Chemistry, Xiamen University

ORGANIC CHEMISTRY Department of Chemistry, Xiamen University Chapter 6 6.1 Introduction

ORGANIC CHEMISTRY Chapter 6 o The c-x bond of alkyl halides is polarized o The carbon atom bears a partial positive charge 9 Ihe halogen atom a partial negative charge C->Ⅹ The size of halogen atoms: I>Br>cI>F Thec-X bond length Bond C-F C-Cl C-Br C- Bond length(A) 1.39 1.78 1.93 2.14 Department of Chemistry, Xiamen University

ORGANIC CHEMISTRY Department of Chemistry, Xiamen University Chapter 6 The C—X bond of alkyl halides is polarized. The carbon atom bears a partial positive charge, The halogen atom a partial negative charge C > X δ δ The size of halogen atoms: I > Br > Cl > F The C—X bond length Bond C—F C—Cl C—Br C—I Bond length (Å) 1.39 1.78 1.93 2.14

ORGANIC CHEMISTRY Chapter 6 o Compounds in which a halogen atom is bonded to an sp -hybridized carbon are called vinylic halides or phenyl halides a vinylic halide a phenyl halide or aryl halide CH=CH Vinyl group 乙烯基 Department of Chemistry, Xiamen University

ORGANIC CHEMISTRY Department of Chemistry, Xiamen University Chapter 6 Compounds in which a halogen atom is bonded to an sp2-hybridized carbon are called vinylic halides or phenyl halides. C C X X A vinylic halide A phenyl halide or aryl halide CH2 CH Vinyl group 乙烯基

ORGANIC CHEMISTRY Chapter 6 6.2 Physical Properties of Organic Halides Department of Chemistry, Xiamen University

ORGANIC CHEMISTRY Department of Chemistry, Xiamen University Chapter 6 6.2 Physical Properties of Organic Halides