Where in the IR spectrum would you expect the following molecule to absorb? The

Question

Where in the IR spectrum would you expect the following molecule to absorb?

The answer I have below is wrong

Where in the IR spectrum would you expect the following molecule to absorb? ball & stick labels 1. Do not list alkane absorptions. 2. Take frequencies from the table below. Enter frequency ranges identically to how they appear in the table. 3. Enter zero in any unused answer box. Functional on (em Intensity Functional Group Absorption (em 1) Intensity 3400-3650 Alkene C-H 3020-3100 Medium Alcohol O-H Medium, broad Alkene C-C 1050-1150 1640-1680 Medium Alcohol C-O Arene C-H Weak Carboxylic acid O-H 1660-2000 Arene C-C Medium Carboxylic acid C- O Alkyne C-H 3300 Strong Ester C o Alkyne C C 2100-2260 Medium Ester sp Co 1200-1250 Strong Nitrile CN Medium Ester sp C-O 2210-2260 1000-1100 Alkyl halide C-Cl 600-800 Strong Aldehyde C O 2720 Weak Alkyl halide C-Br 500-600 Strong Aldehyde C-H Amine N.H 3300 3500 Medium Ketone C O 1715 Strong Amine C-N 1030-1230 Medium Amide C-O Amide N-H Strong 1 amides have 2 N-H stretches. 3200,3400 Nitro 540 Medium 2 amides have 1 N-H stretch. Expected absorption frequencies, or frequency ranges, are: 1735 1200-1250 000-1100 1640-1680

Explanation / Answer

this compound has 1) sp3 C-H streching and bending ( alkane not included) , 2) sp2 C-H streching and bending

, 3) alkene C=C , and 4) ester C=O and ester C-O and C-C

therefore

peaks are 3020 - 3100 cm-1 , 1640 - 1680 cm-1, 1735 cm-1 , 1200 - 1250 cm-1 , 1000 -1100 cm-1

Related Questions

Navigate

• Browse (All)
• Browse W
• Subjects

---

---

Integrity-first tutoring: explanations and feedback only — we do not complete graded work. Learn more.