Sept.30Chem30B-Lect.3

Sept.30Chem30B-Lect.3 - CHEMISTRY
30B
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CHEMISTRY 30B ORGANIC CHEMISTRY Lecture 3
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No#ces and ques#ons….
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“Where in the world is Professor Garcia‐Garibay?”
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LAST FRIDAY LAST MONDAY YESTERDAY TODAY
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3500 3000 2000 1700 1200 600 C H C H O H N H Broad C N C C A B 1ry one band 2ry two bands ~1700 O Very strong C C C O C N C Cl Fingerprint region , very messy (many normal modes, bending, a few stretching vibrations of bonds between "large" atoms, weak bonds with small force constant) MOST USEFUL REGION (many local stretching modes) Aromatic PATTERN RECOGNITION IN IR SPECTROSCOPY 1000
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9/29/2008 Alkanes • IR spectrum of decane (Fig 12.4) Brown, Foote, Iverson, Organic Chemistry, 4 th ed
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1 Brown, Foote, Iverson, Organic Chemistry, 4 th ed Alkenes • IR spectrum of cyclohexene (Fig 12.5) Brown, Foote, Iverson, Organic Chemistry, 4 th ed C=C =CH
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Alkynes • IR spectrum of 1-octyne (Fig 12.6) Brown, Foote, Iverson, Organic Chemistry, 4 th ed
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Aromatics • IR spectrum of toluene (Fig 12.7) Brown, Foote, Iverson, Organic Chemistry, 4 th ed C‐H C=C C‐H bend
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C( sp 3 )—H 3000‐2840 CH 3 (s): 1395‐1365 * * CH 3 (a) and CH 2 :
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This note was uploaded on 02/05/2010 for the course CHEM 30B Chem 30B U taught by Professor Miguelgarciagaribay during the Fall '10 term at UCLA.

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Sept.30Chem30B-Lect.3 - CHEMISTRY
30B
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