272_shapes - Examples: H 3 C CH 3 CH 3 OH Parent:...

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Structure Shape # of 'things' # e - pairs 4 (sp 3 ) 3 (sp 2 ) 2 (sp) Tetrahedral Trigonal Pyramid Bent 0 1 2 0 1 Tetrahedral Trigonal Planar Bent Trigonal Planar Linear Linear Chain Chem 272 Shape, Structure, and Nomenclature • Shape / Structure Bond angles: 109.5° Bond angles: 120° Bond angles: 180° • Nomenclature Steps: 1. Identify the parent structure (longest linear chain or carbocycle) 2. Number the carbon backbone, keeping the substituents numbered as low as possible. 3. Identify and number each substituent 4. Construct the name of the compound, arranging substituents in alphabetical order preceding the parent name
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Unformatted text preview: Examples: H 3 C CH 3 CH 3 OH Parent: cyclopropane H 3 C CH 3 CH 3 OH 1 2 3 Substituents: 1-hydroxy 2-n-propyl 2-i-propyl Name: 1-hydroxy-2-i-propyl-2-n-propylcyclopropane or: 2-i-propyl-2-n-propylcyclopropanol CH 3 H 3 C CH 3 Parent: cyclohexane Substituents: 1,1,2-trimethyl CH 3 H 3 C CH 3 1 2 3 4 5 6 TIP: Don't get caught up in details! As long as the structure can be reproduced from your name (or vice-versa), the ordering is not critical! Name: 1,1,2-trimethylcyclohexane...
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This note was uploaded on 03/07/2011 for the course CHEM 272 taught by Professor Jarrett,j during the Spring '08 term at University of Hawaii, Manoa.

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