chm115_lecture21

chm115_lecture21 - Chemistry 115 Lecture 21 Outline Chapter...

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Chemistry 115 Lecture 21 Outline Chapter 10 – Organic Compounds Carbon-based chemistry Structure and Names Recitation this Friday: Naming Organic Compounds (Chapter 10.1 – 10.2) EXAM III: Wed, April 13, 6:30pm Chapters 8, 9.1-9.2,10.1-10.4
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Organic compounds are extremely important in Chemistry, Biology, Materials Science, etc. The diversity and utility of organic compounds due in part to the special nature of carbon
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The Structural Complexity of Organic Molecules Reviewing the atomic structure and properties of carbon, we can get an idea of why organic molecules can be complex. 1. Electron configuration, electronegativity, covalent bonding Contributing factors include: 2. Bond properties, catenation, and molecular shape. catenation - two atoms of the same element bound to each other 3. Molecular stability atomic size and bond strength available orbitals C based chemistry is more stable than Si based chemistry.
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Diversity in structure and behavior is due to interrelated factors: 1. Bonding to heteroatoms - See Figure 10.1 2. Electron density and reactivity C - C bond EN = 0; therefore the C-C bond is nonpolar and in general unreactive. C - H bond EN ~ 0; therefore the C-H bond is nearly nonpolar and fairly unreactive. C - O bond EN = 1; therefore the C-O bond is polar and reactive. bonds to other heteroatoms are usually large and therefore weak and reactive. The Chemical Diversity of Organic Molecules
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The chemical diversity of organic compounds. 4 carbons linked with single bonds, 1 oxygen and needed hydrogens: CH 3 CH 2 CH 2 CH 2 OH CH 3 CH 2 CH CH 3 OH CH 3 CH 2 CH 2 O CH 3 CH 3 CH CH 2 OH CH 3 CH 3 C OH CH 3 CH 3 CH 3 CH 2 O CH 2 CH 3 CH 3 CH CH 3 O CH 3 CH 3 CH
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This note was uploaded on 04/09/2011 for the course CHM 115 taught by Professor Towns during the Spring '08 term at Purdue.

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chm115_lecture21 - Chemistry 115 Lecture 21 Outline Chapter...

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