Chem 201. Organic Reaction Mechanisms I. Lecture 02. Molecular Orbital Theory (Pt. 1).

UCI Chem 201 Organic Reaction Mechanisms I (Fall 2012)
Lec 02. Organic Reaction Mechanism -- Molecular Orbital Theory -- Part 1
Instructor: David Van Vranken, Ph.D.

License: Creative Commons BY-NC-SA

Description: Advanced treatment of basic mechanistic principles of modern organic chemistry. Topics include molecular orbital theory, orbital symmetry control of organic reactions, aromaticity, carbonium ion chemistry, free radical chemistry, the chemistry of carbenes and carbanions, photochemistry, electrophilic substitutions, aromatic chemistry.

This video is part of a 20-lecture graduate-level course titled "Organic Reaction Mechanisms I" taught at UC Irvine by Professor David Van Vranken.

Recorded October 3, 2012.

[jakeeutis]

Can’t wait to watch the whole series. An excellent display of knowledge towards the subject you’ve got professor

[joshn]

Beautiful rationalization of the subject

[ImranKhan-immw]

I love the way you are teaching, great my dear professor

[youtubegoldmines]

Isnt positive charge on more electronegative atom less stable?

[anyoon]

SPD and m orbital!!! ..스파이더맨 스파이더맨 웨얼알유고잉 스파이더맨 리틀드렁크 리틀프러운

[f]

38:01 if the resonance structure has a separation of charge then wouldn’t the other structure be the larger contributor? If so why wouldn’t the actual structure have more sp3 character on the lower oxygen?

[schleckr]

ah think I figure it out. it is b/c ketone spends less time in sp3 resonance than ether's constant sp3 configuration

[RohitSharma-ikyi]

@26:35 prof says it's sp2 hybridisation of the c and nitrogen AOs but if it's sp2..how is it a linear molecule?

[prithwishghosh]

Ut is said that in a molecule where o is resonating with another oxygen at around timing 38:28 it is said that the ketonic oxygen gets sp3 hybridised in 1 of the resonance structures.What is the net hybridization??

[Ruebacca]

Excellent!  A mechanisms course based on orbitals.  This leads to a deeper understanding than Lewis structures.
What's the P-character?

[schleckr]

at 36:54 he considers resonance for CH3CO2CH3. So why doesn't he consider resonance right before (34:43) for the ketone when he asks which one is more basic between ketone and ether? it would put a negative formal charge on oxygen and a positive on carbon but it still balances out

[tomasgarcia]

I think this is the one subject in the field that I'm not sure i quite grasp. Maybe I'm just special special lol

[dominiquebrodoteau]

Why does the professor say that the p orbitals of nitrogen are lower in energy than that of carbon at 25:29?

[edipcansever]

Nitrogen is more electronegative and attracts the electrons better compare to the carbon atom

[rapflow]

Why you are keep walking always?
It's distracting..