#CyclopentadienylCation, #Antiaromaticity, #aromaticity, #diene, #Cyclopentadiene,


In this lecture, I have discussed the cyclopentadienyl cation derivative which is anti-aromatic aromatic according to Huckel’s rule or (4n+2) rule or better to say relatively less stable. This instability reflects its properties like reluctant to dehydration, dimerization, or molecular rearrangement into some stable derivatives. I have discussed these properties with complete mechanistic justification. Additionally, in the end, I have dissed the excessive reactivity of Maleic anhydride which also resembles heteroatom-containing cyclopentadienyl derivative. I have also provided links for some related videos. Links are provided below. Students are requested to watch them. Thank You….


For "Cyclopentadienyl anion: Aromaticity & other properties (acidity Aromatic Electrophilic Substitution)" please click on the link "[ Ссылка ]"

For "Cyclobutadiene (Anti-aromatic with 4 pi-electrons): Stability Improvement and Chemical Reactions." please click on the link "[ Ссылка ]"

For "Cyclobutadienyl Cations and Cyclobutadienyl anion: Preparation and its Stability and Aromaticity." please click on the link "[ Ссылка ]"

For "Huckel Rule or (4n+2) Rule for aromaticity." please click on the link "[ Ссылка ]"

For "Cyclopropenium ion a Aromatic cation: Physical and chemical properties and preparation." please click on the link "[ Ссылка ]"

For "Practice question answer discussion about Aromaticity (for exams like CSIR-NET, GATE, JAM etc.)" please click on the link "[ Ссылка ]"

For "Question-Answer , Aromaticity and resistance towards oxidation for CSIR-NET, GATE, JAM etc. exams." please click on the link "[ Ссылка ]"

For "Practice question: Aromaticity and the nature of radical (For CSIR-NET, GATE, JAM etc. exams)." click on the link "[ Ссылка ]"

For "CSIR NET-June 2013, Dipole-Moment Vs Aromaticity( Question-Answer discussion)." please click on the link "[ Ссылка ]"

For "Practice question about nitration of [10] annulene for CSIR-NET, GATE, JAM etc. exams." please click on the link "[ Ссылка ]"

For "Q, CSIR-NET Dec-2014: Which one in antiaromatic?" please click on the link "[ Ссылка ]"

For "Question-Answer discussion, Previous year (GATE-2011), Shifting of C=C position" please click on the link "[ Ссылка ]"

For "CSIR-NET, Dec-2013, Aromaticity Vs C=C Rotation (Question-Answer discussion)" please click on the link "[ Ссылка ]"

For "Cyclopentadienyl Cation: Anti-aromaticity & other properties (acidity, dimerization, rearrangement)." please click on the link "[ Ссылка ]"

For "Diels–Alder reaction: Basic idea, importance & Examples with electron-donating & withdrawing groups." please click on the link "[ Ссылка ]"

For "L: 490: Endo vs Exo product in Diels Alder reaction: Molecular Orbital (MO) explanation of mechanism" please click on the link "[ Ссылка ]"

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