@orthocresol Hii Ortho:-) Could you please tell me why is $CH_2=CH-CH_2{}^-$ not stabilized by hyper-conjugation effects? The 3rd $C$ has an empty p orbital and the 2nd one has an $sp^3 C-H$ bond. Moreover the 2nd $C$ also has $\pi$ bond.
In my book, they say it's only stabilized by resonance effects. But aren't the conditions for hyper-conjugation fulfilled here? I'm thinking that the p orbitals of the 2nd $C$ involved in pi bonding can create hyp. conj. with the empty p orbital on the cation. Another possibility is that the empty p on the cation can create hyper conj. with the $C-H$ bond of the 2nd $C$. Please help me. Thank you very much :)
In kryptomerism assignment, there was a question to compare more stable tautomeric form between 4-pyridone (1) and 4-pyridinol (2):
Answer: 4-pyridone.
My friend gave two plausible reasons:
$\ce{C=O},$ is more stable than $\ce{C=N}.$
$\ce{-N=}$ will have greater repulsion between the lone-p...
What is the radius of the hydride $(\ce{H-})$ ion? There are several sources with conflicting reports on the same.
Inorganic Chemistry: Principles of structure and Reactivity cites Pauling’s 1960 study of the hydride ion, stating that
it has a radius of 208 pm compared to 216 pm for the iod...
In Hartree-Fock theory, the expectation value of the total energy can be written as
$$E = \langle\Psi| H |\Psi\rangle = \sum_{a} \langle a| h |a \rangle + \frac{1}{2}\sum_{ab} \big( [aa |bb] - [ab|ba] \big),$$
where the first summation contains the single electron kinetic energy and the interac...
In kryptomerism assignment, there was a question to compare more stable tautomeric form between 4-pyridone (1) and 4-pyridinol (2):
Answer: 4-pyridone.
My friend gave two plausible reasons:
$\ce{C=O},$ is more stable than $\ce{C=N}.$
$\ce{-N=}$ will have greater repulsion between the lone-p...
What is the radius of the hydride $(\ce{H-})$ ion? There are several sources with conflicting reports on the same.
Inorganic Chemistry: Principles of structure and Reactivity cites Pauling’s 1960 study of the hydride ion, stating that
it has a radius of 208 pm compared to 216 pm for the iod...
The Periodic Table
The Periodic Table