Molecular Orbital Theory

Fundamentals of molecular orbital (MO) theory

[@thestemshed984]

I think this is the best explanation of MO theory I’ve seen. Bravo!

[@heshamnasher4997]

same here

[@lindaduong289]

6 MO Theory videos later and I hit THIS GOLD MINE! Thank you for the concise and easy explanation.

[@EvanPeterson.]

REAL.

[@tunneltrance]

I think your missing 2 electrons on the C2 mo diagram at 51:00? I think there should be 12 electrons total and 4 would be in the core below the board so 2 are missing? Anyways, that you for the videos that you've uploaded. You have no idea how much your helping me do good in pchem!! Thank you greatly

[@TDanielCrawfordVT]

Yes, you're exactly right. Very good catch! I realized this just after I posted it, but I've not had a chance to re-record that part of the lecture.

[@louisliu3549]

@@TDanielCrawfordVT so, the bond order for C2 should be 2, right? thank you very much for your excellent lecture, it really helps me a lot.

[@TDanielCrawford]

@@louisliu3549 Correct!

[@gnanamaheswar8403]

@@TDanielCrawfordVT I think you can update it in the description. Thank you.

[@alquran-alkareem2231]

I love your teaching method so simple, clear, and effective.

[@Jin-ud8ij]

how do you make it so easy to understand? Thank you so much for the video. I hope you continue to upload more videos no physical chemistry.

[@FareedaKalsoom]

Wonderfully clear explanation.

[@melodyghanipour9798]

Thank you so much for the explanations... you make it so easy to understand... I´m looking forward to seeing more of your Videos

[@beta3physiaacademy-925]

I really thank you for the great effort and very well fantastic explanation

[@JR-nw4to]

This is an excelent lecture.

[@TESTCLUB213]

hello sir....its great lecture....very well explained.....thank you so much..i have been searching for long time about nodes and wave like that.....thank you sir

[@zacay5717]

Thank you for the outstanding lectures. A quick question, if CO is isoelectronic with N2, shouldn't the Pi* be lower in energy than Pi and thus be populated first? or did something change when we are talking about hetero nuclear diatomic molecules?

[@TDanielCrawford]

I'm not sure I understand your question. The type of orbital - pi vs. sigma, bonding vs. anti-bonding - is the same between N2 and CO.

[@kknight39]

Is it appropriate to associate Pi electrons in the MO's to the Pi-bonds in the lewis structure?? Are these the pi electrons or lone pairs that play out in resonance?

[@TDanielCrawford]

In the fundamental picture provided in my lecture, the π bonds in the MO diagram correspond to double bonds in the Lewis structure, but the correspondence is not perfect (see O2, for example) because these are still models. Resonance is associated with Lewis structures, not MOs, and corresponds to superpositions of configurations in which electrons appear in lone pairs vs. double/triple bonds. I hope this helps!

[@kknight39]

@@TDanielCrawford Thank you for the prompt reply. This lecture was excellent and I needed the clarification related to the linear combination of the wavefunctions. I am still developing how best to internalize resonance. The issue I think is not conflating the roles that MO and valence bond theory are used to describe. In the case of resonance, the superposition of configurations seems to suggest some kind of average of those configurations. Which one of these actually refer to electron density in the molecule? MO? Valence bond? And, is resonance not an actual description of a electron distribution?

[@tipusemua]

How may I cite this lecture? Is KZbin link sufficient?

[@rahulrajshrivastava7439]

Please continue with your online classes sir,,

[@zulqarnainchaughtai]

In case of nitrogen molecule due to sigma pi crossover, pi MO's have lower energy as compared to sigma MO. Can we say that pi bonds are stronger than sigma bond in case of nitrogen molecule?

[@suryanshkashyap8925]

Yes apparently the Pi bonds in nitrogen are more stronger than its Sigma bond and a vivid example is the difficulties associated with the nitrogen activation process .

[@goliathlau7552]

This is really good

[@moonwalking5371]

Thank you so so soooooooooooo very much, loved the way you taught me MOT, I cant thank you enough for it, May god bless you,your children and your entire family with Lots of health throughout your whole life,Love you so very much, You are amazing at teaching,My college never taught me the way you taught me through this video,i have chemistry exam next week, and i knew nothing about MOT, and you have helped me so much in understanding it,i had no knowledge what MOT even was,and it is the end of my session and iam close to my exams,Thank you so so soooooooo very much, Love you from the bottom of my heart ❤️❤️❤️❤️❤️ (❤️ ω ❤️)(❤️ ω ❤️)

[@nonneponne]

holy hell, take a step back and relax a bit

[@moonwalking5371]

@@nonneponne haha that was me 1 year ago struggling to learn MOT kek

[@heshamnasher4997]

Vielen lieben Dank

[@gireeshkumar5223]

Sir make correction c2 have 12 electron

[@setarehm54]

thank u so much!

[@nurlatifahmohdnor8939]

☆

[@rebecca421]

😂😂😂😂m first here 🍷🔫