310-7 - Organic Lecture Series CH 310 N LECTURE 7 Textbook...

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Organic Lecture Series 1 CH 310 N LECTURE 7 Textbook Assignment: Chap 12 (IR-up to 12.4); Chap 15 Begin Homework (for credit): POW 2 posted (Due Feb 8) Today’s Topics: Solving Unknowns; Intro to organometallic Notice & Announcements: JAC office hrs begin ~2:45 today Organic Lecture Series 2 Strategies for IR Interpretation Strategies for IR Interpretation Inspect the spectrum from left to right. 9 If there is a strong, but broad band 3500 cm -1 then, OH is present. One or two weak peaks in this area are indicative of amines (N—H stretch). 9 Examine the 3000 cm -1 C—H aliphatic stretches are to the right and C—H from alkenes & aromatics are to the left. 9 Aldehyde C—H stretch will be ~ 2720 cm -1 9 Check the area from 1820 to 1630 cm -1 . Strong peaks in this area indicate C=O and this is often the strongest peak in the spectrum. 9 The area from 1250 to 1000 cm -1 are the C—O stretches of ethers, esters, acids.
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Organic Lecture Series 3 C 4 H 8 O ~1740 cm -1 Organic Lecture Series 4 1 1 6 C 4 H 8 O Closer Look
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Organic Lecture Series 5 6 1 7 peaks Organic Lecture Series 6
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Organic Lecture Series 7 C 4 H 8 O 2 ~1740 cm -1 Organic Lecture Series 8 3 2 3 C 4 H 8 O 2
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Organic Lecture Series 9 Organic Lecture Series 10 C 8 H 8 O ~1700 cm -1 ~1250 cm -1
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Organic Lecture Series 11 2 3 3 C 8 H 8 O Closer Look Organic Lecture Series 12 23 C 8 H 8 O
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Organic Lecture Series 13 Organic Lecture Series 14 C 8 H 10
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Organic Lecture Series 3 2 5 C 8 H 10 Closer Look Organic Lecture Series 16 0 1 2 3 4 5 6 7 8 PPM 2 3 2 3 C 8 H 10
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310-7 - Organic Lecture Series CH 310 N LECTURE 7 Textbook...

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