1. What is the formal charge on the nitrogen in the following structure? H a. 2 b. 1 c. 0 2. Explain your answer (show your work) to question 1 below ( 3. What is the relationship between the following structures? a. d. -1 e. -2 C. 4. Which of the following compounds is not an organic compound. a. CH3N₂ b. CH3COCH 3 H- H a. Same molecule b. Different unrelated molecules (not isomers) c. Constitutional isomers c) C&H 18 d) H₂O 5. Which of the following is the correct depiction of the dipole for a C-F bond? a H ⒸN=N=0: N=N=0: ←+ C-F b 6. Which of the following pairs are valid resonance structures of each other? O H-N―N=N: H-N= EN C+F 1 C+F d. d Ⓒ H₂C=N= H3C-N=
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.
These questions are mainly based on the structural aspects and stabilization of organic molecules.
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