How to draw resonance structures (4)

Organic chemistry: How to use curved ("electron-pushing") arrows to draw resonance structures.

These videos are offered on a "pay what you like" basis. You can pay for the use of the videos at my website:
http://www.freelance-teacher.com/videos.htm

For a list of all the available video series, arranged in suggested viewing order, go to my website.

For a playlist containing all the videos in this series, click here:
http://www.youtube.com/watch?v=S9AMWGN_pyY&feature=PlayList&p=A0D8388...

(1) Intro
(2) Intro: The meaning of resonance
(3) Intro: legal vs. illegal structures; the purpose of drawing resonance structures is to identify where the charges are
(4) Intro: more significant vs. less significant structures
(5) Intro: "more significant", "less significant", "insignificant"
(6) Intro: Why is it so important to know where the charges are?
(7) Intro: Why is it important to know where the charges are, continued.
(8) How to draw resonance structures when you are given a single electron-pushing arrow: lone pair to pi bond
(9) Lone pair to pi bond, continued
(10) Lone pair to pi bond, continued
(11) How to draw resonance structures when you are given a single electron-pushing arrow: pi bond to lone pair
(12) Pi bond to lone pair, continued
(13) How to draw resonance structures when you are given a single electron-pushing arrow: pi bond to pi bond
(14) Pi bond to pi bond, continued
(15) Summary and review
(16) How to draw resonance structures when you are given two electron-pushing arrows
(17) Given two electron-pushing arrows, continued
(18) Given two electron-pushing arrows
(19) Given two electron-pushing arrows
(20) Given two electron-pushing arrows
(21) Summary and review
(22) How to draw resonance structures when you are given multiple electron-pushing arrows
(23) Given multiple electron-pushing arrows, continued
(24) Given multiple electron-pushing arrows, continued
(25) Given multiple electron-pushing arrows, continued
(26) Given multiple electron-pushing arrows, continued
(27) Given multiple electron-pushing arrows--cycles of arrows
(28) Given multiple electron-pushing arrows--cycles of arrows
(29) How to draw resonance structures when you're given electron-pushing arrows--triple bonds
(30) How to identify atoms which are candidates for resonance
(31) Candidates for resonance, continued
(32) Using "candidates for resonance" to detect illegal arrows
(33) Candidates for resonance: elements that can exceed an octet
(34) "Owning", "sharing", and "lacking" electron pairs
(35) Don't draw "lone pair to lone pair" transitions
(36) The "as close as possible" principle
(37) The "as close as possible" principle
(38) The "as close as possible" principle
(39) Don't break sigma bonds!
(40) Don't exceed an octet. But you don't need to worry that "pi bond to lone pair" transitions will exceed an octet.
(41) The most important rule: To avoid exceeding an octet, any new pi bond must be formed either with a carbocation, or with an atom that's also losing a pi bond.
(42) The most important rule, continued
(43) The most important rule, continued
(44) The most important rule, continued
(45) The most important rule, continued
(46) The most important rule: summary and review; elements in 3rd period and below
(47) Don't draw resonance structures with more than two charges
(48) Don't draw resonance structures with more than two charges, continued
(49) The two good reasons for moving a pi bond into a lone pair
(50) The two good reasons for moving a pi bond into a lone pair, continued


tags: education college student school study test exam educational

Category:

Education

Tags:

• organic
• chemistry
• resonance
• structure
• electron-pushing
• curved
• arrows
• education
• college
• student
• school
• study
• test
• exam
• educational

[PrincessUnicorn69]

What a BOSS

[ericshamp1]

totally awesome dude

(hey free lecture)

[ayujen]

Thank you sooooo much! Just as I was worried about my O-chem foundation since we have a really bad professor, I've found you! Thank God and thank you!!

[p10shinde]

but how to draw combined resonating structure.......? plz hlp

[qrais]

I love you but you repeat everything 10 000 times

[moonraven312]

Ty for all your videos. They helped me a lot last semester with organic chem. 1 and now with the second part. Tyvm! :D

[ywang252]

I plan to finish these videos of this series this week. Glad I have started on organic chemistry.

[cooldevashish]

hey gr8 .......thanx a , lotttt......but is this gud enuf for entrance exams...??

[cmonbugmenot]

wait so, what is the rule to determine which structure is the favored one / contributes more to the hybrid?

[delysid111]

Rearrange the molecular structure. Real neat. Can one tell these formals into consideration of Z tork and W+-. The proton structures are stabile at this points so no gluon algorithm needed. It is still very interesting to space chemistry and where the potence of molecular rearrangements occur. In temprature, in ray light, or particle interaction.