Vibrational Spectroscopy: IR vs. Raman

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  • Опубликовано: 24 дек 2024

Комментарии • 28

  • @cielsteam
    @cielsteam 6 месяцев назад +3

    11 years later, this very niche video is still helping people. Thank you, this video is wonderful!

  • @sidewaysfcs0718
    @sidewaysfcs0718 9 лет назад +38

    polarizability is simply the ability of a molecule to have it's electron density deformed, an asymmetric stretch would not deform the density it would only shift it in one direction, changing the dipole, but not changing the polarizability too much

  • @Tinp2Life
    @Tinp2Life 9 лет назад +11

    Holy shit, I didnt get why sometimes it's IR active and sometimes it isnt but i get it now. You're great, lady, omg I owe you my life I love u.

  • @KakashiBallZ
    @KakashiBallZ 11 лет назад

    It's because the polarizability from the stretch on one side of CCl4 is "canceled out" by the compression of the other C-Cl bond in the asymmetric stretch, so there is little change in polarizability overall in that particular vibrational mode.

  • @fractalnomics
    @fractalnomics 7 лет назад

    5:11 sample irradiated, inelastic, 'transfer between molecule and photon 3:35 Beer's Law, concentration proportional to absorbance

  • @explanationfunda4714
    @explanationfunda4714 7 лет назад +3

    best video to understand the basics of IR and RAMAN, thanks a lot

  • @lunagh6149
    @lunagh6149 3 года назад

    as a physics student this saved my life , thanks a lot.

  • @MrBiggestApple
    @MrBiggestApple 7 лет назад +6

    Thank you for the video, I needed just one more little clue to finally get it :)
    Keep up the good work, you explain pretty well and you have a nice voice to listen to :D

  • @angeluomo
    @angeluomo 9 лет назад +4

    This is clear and excellent. Many thanks!

  • @fractalnomics
    @fractalnomics 6 лет назад +2

    4:44 Yes, and this (CO2) mode is registered clearly by Raman Spectroscopy. Why isn't that stated?

  • @purushothsivam8761
    @purushothsivam8761 4 года назад +1

    Nice video very useful, thanks

  • @superluminal89
    @superluminal89 2 года назад

    Would laser spectroscopy be a better way to determine information of a sample?

  • @mereadswiki6175
    @mereadswiki6175 3 года назад

    why is there a modern warfare 2 hit sound when slides change lol

  • @rajeshthangappan1594
    @rajeshthangappan1594 5 лет назад +1

    Tell the difference between Raman and FT-IR sepecrometer

  • @kremesti
    @kremesti 7 лет назад

    awesome presentation, clear voice, to the point bravo

  • @varaprasad6119
    @varaprasad6119 7 лет назад

    Can you add whole playlist of spectroscopic methods?

  • @marcosmonsanto5823
    @marcosmonsanto5823 7 лет назад

    Someone can tell me Wy we can determineded Cu with absorcion spectrofotometry

  • @shivamsahil3660
    @shivamsahil3660 7 лет назад

    Hello mam! I am btech mechanical engineering student and I am working on a project related to raman spectroscope I had some doubts regarding that can you please help me with them?

  • @oddesy4
    @oddesy4 11 лет назад

    Confused on the Raman part. So change in polarisability needed for raman (due to change in shape/electron cloud position), would this not suggest that the asymmetric stretch would be more raman active as the shape change is more significant, as the structure is no longer a symmetrically linear geometry? This video did help clear up alot for me though thanks! Any response would be appreciated as i have my exams on this in a few weeks! :)

  • @lailasoliman9315
    @lailasoliman9315 4 года назад

    Very useful and understanding

  • @ericjiang1824
    @ericjiang1824 5 лет назад

    Nice video, excellent!

  • @energetic00cookie
    @energetic00cookie 9 лет назад +2

    Very useful, thank you!

  • @ITFAE
    @ITFAE 4 года назад

    holy. this a great video. thank you

  • @samjolayemi4906
    @samjolayemi4906 9 лет назад +1

    Whao! thank u so much

  • @kremesti
    @kremesti 7 лет назад

    great video thanks girl

  • @tomtomtom999
    @tomtomtom999 7 лет назад

    talk too much, maybe give some drawings