What is the functional group name? What is the IR stretching frequency (base value)? What is the 13C NMR ppm range? If strained, what is the new IR stretching frequency? If conjugated, what is the new IR stretching frequency? NH & r i X 'H
Reactive Intermediates
In chemistry, reactive intermediates are termed as short-lived, highly reactive atoms with high energy. They rapidly transform into stable particles during a chemical reaction. In specific cases, by means of matrix isolation and at low-temperature reactive intermediates can be isolated.
Hydride Shift
A hydride shift is a rearrangement of a hydrogen atom in a carbocation that occurs to make the molecule more stable. In organic chemistry, rearrangement of the carbocation is very easily seen. This rearrangement can be because of the movement of a carbocation to attain stability in the compound. Such structural reorganization movement is called a shift within molecules. After the shifting of carbocation over the different carbon then they form structural isomers of the previous existing molecule.
Vinylic Carbocation
A carbocation where the positive charge is on the alkene carbon is known as the vinyl carbocation or vinyl cation. The empirical formula for vinyl cation is C2H3+. In the vinyl carbocation, the positive charge is on the carbon atom with the double bond therefore it is sp hybridized. It is known to be a part of various reactions, for example, electrophilic addition of alkynes and solvolysis as well. It plays the role of a reactive intermediate in these reactions.
Cycloheptatrienyl Cation
It is an aromatic carbocation having a general formula, [C7 H7]+. It is also known as the aromatic tropylium ion. Its name is derived from the molecule tropine, which is a seven membered carbon atom ring. Cycloheptatriene or tropylidene was first synthesized from tropine.
Stability of Vinyl Carbocation
Carbocations are positively charged carbon atoms. It is also known as a carbonium ion.
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### Details:
1. **Functional Group Name**: This column must be filled based on the structure of the molecule.
2. **IR Stretching Frequency (Base Value)**: This indicates the wavenumber (in cm^-1) where the functional group absorbs infrared radiation.
3. **13C NMR ppm Range**: This column records the chemical shift range for the carbon atoms in the functional group in a CNMR spectrum.
4. **If Strained, New IR Stretching Frequency**: Indicates the change in IR frequency for strained functional groups.
5. **If Conjugated, New IR Stretching Frequency**: Indicates the shift in IR frequency due to conjugation with another pi system.
Educational websites can use such tables to teach students about identifying functional groups and interpreting spectroscopy data. Each functional group should be analyzed for its specific spectroscopic properties, both in relaxed and modified states (strained or conjugated).](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2Fae9d54ed-8659-4323-bdbc-28db9dd0e114%2F6e167b40-cadf-4032-b8a4-139d704cbc97%2F17amrro_processed.png&w=3840&q=75)
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