西北农林科技大学：《有机化学 Organic chemistry》课程教学课件（2019）McMurry OCB 3Ed Chapter 01 Structure and Bonding（主讲：王俊儒）

Organic Chemistry with Biological Applications,3r Edition John McMurry Chapter 1 Structure and Bonding JOHN MCMURRY To view some ideas about atoms, bonds,and molecular geometry 9 Organic Chemistry wth Biological Applications Junru Wang College of Chemistry and Pharmacy,Room C206,Science Building Tel:15109273921;Email:wangjunru@nwafu.edu.cn

Chapter 1 Structure and Bonding Organic Chemistry with Biological Applications, 3rd Edition John McMurry To view some ideas about atoms, bonds, and molecular geometry Junru Wang College of Chemistry and Pharmacy,Room C206, Science Building Tel: 15109273921; Email: wangjunru@nwafu.edu.cn

Organic Chemistry with Biological Applications,3r Edition John McMurry Key Notes Electronic Configurations,Covalent Bonds, Chemical Bonding theory,Structure Drawing Homework:p161.10:1.11;P27c1.36;1.42 By Junru Wang College of Chemistry and Pharmacy Room C206,Science Building Email:wangjr07@163.com

By Junru Wang College of Chemistry and Pharmacy Room C206, Science Building Email: wangjr07@163.com Key Notes Electronic Configurations, Covalent Bonds, Chemical Bonding theory, Structure Drawing Organic Chemistry with Biological Applications, 3rd Edition John McMurry Homework: p16 1.10; 1.11； P27c 1.36; 1.42

Main Contents -Atomic structure -Development of chemical bonding theory -Hybridization theory -Drawing chemical structures

Main Contents Atomic structure Development of chemical bonding theory Hybridization theory Drawing chemical structures

SEC 1 Definitions Organic Chemistry What:The study of carbon-containing compounds Why:Pervasive in nature 普逼深入的 Chemical foundation of biology Improve standard of living(medicines,plastics,pesticides...) How:Examine structure and analyze how it governs reactivity

普遍深入的 SEC 1 Definitions

Almost everything you see in this picture is made of organic chemicals

Almost everything you see in this picture is made of organic chemicals

History...Key time -Organic Chemistry is... Old:“derived from living organisms” "New:“chemistry of carbon compounds'” From inorganic to organic,Wohler,1828 In 1770,Swedish chemist Torberm Bergman was the first to express the difference between"organic"and “inorganic'”substances Organic---derived from living organism -Originally,Study of compounds extracted from living organisms and their natural products INORGANIC CHEMICALS were found primarily in the earth as mineral deposits,but could also be prepared by man

History… Key time Organic Chemistry is…  Old: “derived from living organisms”  New: “chemistry of carbon compounds”  From inorganic to organic, Wöhler, 1828  In 1770, Swedish chemist Torberm Bergman was the first to express the difference between “organic” and “inorganic” substances Organic --- derived from living organism  Originally, Study of compounds extracted from living organisms and their natural products INORGANIC CHEMICALS were found primarily in the earth as mineral deposits, but could also be prepared by man

History...VITALISM 神秘莫测的力 Vital force theory:生命力学说 Compounds such as sugar,urea,starch,waxes, and plant oils were considered“organic” -People believed that...... Organic compounds needs a"vital force"to create them -Vitalism was the belief that certain chemicals, ORGANIC CHEMICALS,could only be made by living organisms

History… VITALISM 神秘莫测的力 Vital force theory:生命力学说  Compounds such as sugar, urea, starch, waxes, and plant oils were considered “organic”  People believed that……  Organic compounds needs a “vital force” to create them  Vitalism was the belief that certain chemicals, ORGANIC CHEMICALS, could only be made by living organisms

History...Key time In1828,Fridrich Wohter（魏勒) convert the “inorganic”salt ammonium cyanate氰酸铰into the “organic”su6 stance urea.. With this discovery,organic chemistry was born. Heat NH4*OCN NH2 NH2

History… Key time In 1828, Fridrich Wohler（魏勒） convert the “inorganic” salt ammonium cyanate氰酸铵into the “organic” substance urea. With this discovery, organic chemistry was born. NH4+ - OCN NH2 O NH2 Heat

Unique property of carbon --Bond to one another in a virtually limitless number of arrangements 6 Carbon Atomic Weight 12.011 Melting Point 3823.2K Boiling Point 1st lonization Energy 1086.4 kJ/mol Density 2.266gcm3 Electron Configuration [He]2s22p2 Atomic Radius 77.2

Unique property of carbon ---Bond to one another in a virtually limitless number of arrangements

Carbon 6 Density Reduction Potential Electronegativity 2.266gcm3 Not Available 2.55 C Boiling Point 1st lonization Energy Electron Configuration 12.011 Not Available 1086.4k/mol [He]2s22p2 Melting Point 2nd lonization Energy Stable Isotopes 3823.2K 2352.6k/mol 12c,13C Heat Capacity 3rd lonization Energy 8.53gK 4620.4k/mol FULLERENE Heat of Atomization Electron Affinity 716.7k/mol 122 kJ/mol DIAMOND GRAPHITE Heat of Vaporization Atomic Radius 710.9k/mol 77.2pm Heat of Fusion lonic Radius Crystal Structure 105 kl/mol 30pm(c4+) Source:http://college.cengage.com/chemistry/discipline/mml3/#tools_0_2

Source: http://college.cengage.com/chemistry/discipline/mml3/#tools_0_2