Why is LiAlH4 Stronger at Reducing than NaBH4? - Organic Chemistry

Поделиться
HTML-код
  • Опубликовано: 29 окт 2024

Комментарии • 53

  • @JJ-Colo
    @JJ-Colo 3 года назад +2

    Simple answer: Al is bigger than B (including electronegativity), and thus the distance btw Al-H is longer than that of btw B-H. The similar concept is the acidity of H-I vs H-Cl.

  • @TET2005
    @TET2005 4 года назад +3

    Nice... a concept explained with clarity is better than covering 10 concepts with no clear explanation. Btw, I am a chem teacher.

  • @edi9892
    @edi9892 3 года назад +1

    Quite a niche topic for YT, but pretty nice for any Chemistry student, or Chemist (who tries to refresh his knowledge, like me).

    • @OrgoMadeEasy
      @OrgoMadeEasy  3 года назад

      Thanks! 😃 Cool stuff right?

    • @Tag_Gw
      @Tag_Gw 4 месяца назад

      So when H+attacking Oxygen i mean if oxygen has already "bond" with li or na.​@@OrgoMadeEasy

    • @Tag_Gw
      @Tag_Gw 4 месяца назад

      ​@@OrgoMadeEasyso H+ is better counter ion rather than li and na? I mean i want reduce keton to an alcohol by adding h3o+ molecul

  • @고바순
    @고바순 3 года назад +1

    this guy is a legend

  • @ginamarie7603
    @ginamarie7603 5 лет назад

    I think your videos are great. You have a very relaxed way of presenting, you don't try to be fancy or perfect, keep it up.

  • @vishwabandhupurkar4812
    @vishwabandhupurkar4812 6 лет назад

    You gave me the correct direction of thinking over this concept... thank you so much sir...

  • @saiavinashsattiraju2743
    @saiavinashsattiraju2743 10 лет назад +2

    can you post videos on many important reagents of organic chemistry.you are simply superb thank you so much sir.

  • @johngalt1669
    @johngalt1669 3 года назад +1

    U're the best teacher!!! I love your videos!

  • @jeremysamuels2858
    @jeremysamuels2858 10 лет назад +7

    Thanks, you explained this concept very clearly. I think that the video would be better without including the bloops though...

    • @OrgoMadeEasy
      @OrgoMadeEasy  10 лет назад +12

      Jeremy Samuels Thanks Jeremy! True, I guess the bloops don't teach anything, but sometimes I like to include bloops to show that no ones perfect, and to make the video a little more relaxed? lol I try to not make them too long though.

  • @marvel438
    @marvel438 8 лет назад +1

    Amazing explanation. Thank you.

    • @OrgoMadeEasy
      @OrgoMadeEasy  8 лет назад +3

      No problem Ali! I'm glad it made sense to you! :D I was so excited when I learned this, and knew I had to share it with everyone.

  • @shubhranshgupta6095
    @shubhranshgupta6095 8 лет назад +1

    thanks sir.... Ur video proves very beneficial for me .. I have totally mess up BTW nabh4 and lialh4 but ur concept was amazing and now I am totally clear abt the difference.. hope u could tell me and reply my ques --- Optically active 2- iodooctane when treated with radioactive NaI128 in dry acetone rate of loss of optical activity is twice the rate of isotopic exchange... plz explain it...????

  • @pragatiswain6914
    @pragatiswain6914 4 года назад

    Enlightening!! Yes dude!!! Thanks a lot

  • @brianng4933
    @brianng4933 3 года назад +1

    Great video explanation, but LiAlH4 does not reduce carboxylic acids by nucleophilic addition/attack. Because a carboxylic acid (unlike ketones or aldehydes) has an acidic proton, LAH will instead act as a base in excess, and then do another nucleophilic addition when it is made into the aldehyde further on in the mechanism. :)

    • @OrgoMadeEasy
      @OrgoMadeEasy  3 года назад

      You’re totes right! I realized this in 2016 after I made the vid 😅. Most schools though don’t require students to know the full mech/aren’t tested on it. So luckily this explanation is simpler/still sort of works!

  • @abhishek11ist
    @abhishek11ist 6 лет назад

    nicely explained bro..keep it up

  • @nidhibiswas4491
    @nidhibiswas4491 4 года назад

    Wowwww thanks for such a good explanation

  • @mabe1272
    @mabe1272 4 года назад

    Thank you!! No point of ambiguity I know it's funny but your explanation and behaviour was also cute😎😁

  • @Mayflower018
    @Mayflower018 4 года назад

    Li+ is smaller than Na+, making the + charge more concentrated/stronger to better stabilize O- and keep C+ more available for H- nucleophilic attack.

    • @Tag_Gw
      @Tag_Gw 4 месяца назад

      So H+ is more stonger right? Smaller orbit so its make ketone to alcohol by adding nabh4 + h3o++

  • @MrMartinswan
    @MrMartinswan 2 месяца назад

    Do the actual video please how to make Lialh4

  • @seetecktee
    @seetecktee 3 года назад

    thanks

  • @charishashyamsukha6501
    @charishashyamsukha6501 5 лет назад

    Really nice.

  • @pokerater4463
    @pokerater4463 7 лет назад

    it was a good explanation

  • @pallavigupta292
    @pallavigupta292 4 года назад

    Amazing✌️✌️

  • @laraaziz7211
    @laraaziz7211 5 лет назад

    @ 2:36 how did the hydrogen attach the carbon where it already has 4 bonds around it??????

    • @ScilexGuitar
      @ScilexGuitar 5 лет назад

      It wont happen, this step is wrong

    • @Mayflower018
      @Mayflower018 4 года назад

      in C=O double bond. Oxygen is very electronegative and pulls all the electrons away from Carbon making Carbon partially +. In LiAlH4 or NaBH4, Hydrogen is more electronegative than Aluminum and Boron and both are more stable with 3 bonds not 4 (full at 6 e- not 8). So H can take 2 electrons from B or Al and become H-. C is electrophilic with PARTIAL + and H- is nucleophilic with FULL -, so the H- can attack C(+) and electrons in C=O double bond can move to the electronegative Oxygen. C still has 4 bonds, C=O becomes C-O.
      Watch his previous video or check out Khan Academy, to see this visually.

  • @wabnilu
    @wabnilu 5 лет назад

    Good job :)

  • @sarahaimen5602
    @sarahaimen5602 6 лет назад

    Ty

  • @lalitakanwar1549
    @lalitakanwar1549 Год назад

    Tysm sir 💖

    • @OrgoMadeEasy
      @OrgoMadeEasy  Год назад +1

      You’re very welcome Lalita! 😄

  • @gasperkosmac7672
    @gasperkosmac7672 8 лет назад

    Great vid thx

  • @strange9080
    @strange9080 2 года назад

    Frank let's go

    • @OrgoMadeEasy
      @OrgoMadeEasy  2 года назад

      Launch all Hydrides on my mark… Mark! 🚀

  • @snehasarmah9999
    @snehasarmah9999 3 года назад

    It was definitely helpful but I liked it even more bcz u're so cute !!

  • @biblohudson9425
    @biblohudson9425 4 года назад

    Why not use LiAlH4 all the time?

    • @OrgoMadeEasy
      @OrgoMadeEasy  4 года назад

      Biblo Hudson sometimes you have a Ketone and a Carboxylic Acid on your molecule but you only want to reduce the Ketone down to a Alcohol but not the Carboxylic Acid. 😉

  • @plasticpurush29
    @plasticpurush29 3 месяца назад

    I am from india 🇮🇳🇮🇳🇮🇳

  • @gigiadd2816
    @gigiadd2816 Год назад

    LiBH4 ?

  • @gskorangakoranga4810
    @gskorangakoranga4810 8 лет назад

    waww