IR Absortion 1.What are the 4 functional groups that always present absorptions with easily recognizable shape,...

IR Absortion

1.What are the 4 functional groups that always present absorptions with easily recognizable shape, position and intensity? (4) Explain.

2. What type of vibration requires more energy to produce, one of stretching or one of bending

Expert Solution

1) IR spectroscopy is used to identify the functional groups present in a compound.

Alkyne :2150 cm ^-1, medium, for carbon-carbon triple bond and 3300 cm ^-1 , strong ,for C-H

Nitrile : 2250 cm ^-1 , medium , for Carbon-Nitrogen triple bond

Aldehyde : 2690-2840 cm ^-1 ( 2 bands) , medium , for aldehyde C-H bond and 1720-1740 cm ^-1 , strong, for carbon - oxygen double bond.

Alconol : 3200- 3500 cm ^-1 , strong and broad , for O-H bond and 1000-1200 cm ^-1 ,strong , for C-O bond

2) More energy is required to stretch a bond as compared to bend a bond. Because it is difficult to stretch a bond than to bend it.

queen_honey_blossom answered 2 years ago

Is it true or false that IR spectroscopy is used to detect functional groups?

1. Where do the typical IR absorption come for the following functional groups. Alcohol ...

1. Where do the typical IR absorption come for the following functional groups. Alcohol Alkyl Alkene Alkyne Aromatics Carboxylic acids 2. Where do the typical IR absorption comes for amines? Primary amines Secondary amines Tertiary amines

For Enalapril (drug): Indicate expected absorptions in IR above 1500 cm -1

What are the functional group and the fingerprint regions in mid-IR?

What is this compound? What are the functional groups?

What are functional groups? How do the differing charges of functional groups influence the behavior of...

What are functional groups? How do the differing charges of functional groups influence the behavior of the functional groups, the structure of molecules bearing the functional groups, and the interactions of the molecules with water?

Chemical properties of all organic compounds depends what types of functional groups are present. Explain this...

Chemical properties of all organic compounds depends what types of functional groups are present. Explain this concept using specific examples

Which of the following compounds is most acidic? (Consider the functional groups present and their effect)....

Which of the following compounds is most acidic? (Consider the functional groups present and their effect). Select one: a. ethanol b. propanol c. 2-chloropropanol d. butanol e. 3-chloropropanol

Which of the following functional groups always has non-zero formal charges in its Lewis structure? A....

Which of the following functional groups always has non-zero formal charges in its Lewis structure? A. -oh B. -No2 C.-Nh2 D. -co2h 2. What is the condensed structure for butane? 3. Resonance is the result of A. Side to side overlap of p orbitals B. End to end overlap of p orbitals C. End to end overlap of s orbitals D. Side to side overlap of d orbitals

1. What type of reaction links two amino acids into a dipeptide? 2. What functional groups...

1. What type of reaction links two amino acids into a dipeptide? 2. What functional groups are found in the peptide backbone? 3. Would a peptide in solution be vulnerable to cleavage by addition of a strong base to the solution? 4. Where does the R group or side chain connect to the backbone of an amino acid? 5. Are polypeptides linear or branched polymers? 6. Where are hydrophobic side chains generally found in a globular protein? 7. Where are...

Question