Stereochemistry (Part-3) Tricks to find R/S of Biphenyls, allenes, spiro and Ansa Compounds

[@ankitavijay5281]

Awsm explanation. I have never seen teacher of chemistry like u.. God bless you

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THANK U DIMDIJI , MERE IIT KGP KE PROFESSORS SE BETTER PADHA DIYA AAPNE TOH!

[@b.barman4943]

Madam aap great ho ......Itne piyar se samjhati ho aur achhe se samjhati ho pura smjh aata h ..... Thank you so much

[@seesaw4377]

Mam u r explaining so nicely..even this stereochemistry is...3d unit hard to understand..Mam.u r my...role model....i am following...ur rules...of chemistry...u r really.. efficient and nice ....teacher...that i have not seen in my last 20 years...

[@khalidahamid9871]

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[@JChemistry]

Thank you so much 🌺 Love from India :)

[@shreyagarg634]

Pls tell me what is pilot atom

[@smrutipallabiparhi8821]

@@shreyagarg634 first atom which is out of the plane

[@mayuribarman2139]

Need a teacher like u ma'am...God bless u❤

[@subhendunayak]

Superb Explanation Ma'am 🙏🏼🙏🏼🙏🏼

[@vijaykaul8627]

Mam there is no such requirement to place the lowest priority group on the dotted wedge in allenes to determine/designate them as R or S stereomers. Such a requirement arises in chiral centers attached to four different groups pointing in different direction. In allenes groups have fixed geometries in two different planes at the terminal carbons. This modified R and S nomenclature is applied to allenes with even no of double bonds as they are considered as extended/elongated tetrahedrons. Also, you can view the molecule from either end. The groups attached to the carbon from the viewing end get priority over the farther end while designating them as Ra or Sa.

[@LuckySingh-ln9ox]

Thank u very much for your efforts to make us understand.

[@shivanikadhankhar5229]

Mam u r outstanding... Good explanation.... Thanku soo much mam for your support.. And great explanation..... Thanku....

[@user-wp6ny5ol4w]

Mam u r great!👍 May God bless uh with whatever u want.. Tysm

[@subhendunayak]

Thank You Ma'am 🙏🏼❤️

[@virenswami931]

Very impressive mam Less time me best metter 👍👍👍 And I understood very well

[@anshul2166]

Mam I'm from ICT Mumbai .......... Your lecture helps me alot

[@mdmasudursaikh5096]

Very nice and helpful video Mam. Thank you so much for this video.

[@poojapatel8389]

Thank you mam... best explanation 💫💫📚

[@saptarshi_]

U r really professional teacher..just awesome 👌

[@VijayKumar-ec7ut]

At 28:10 cyclophanes for upper ring we write opposite config bcoz very simple,you rotate your finger towards clockwise now lift your hand with rotating only above your head then look at your finger it moves anticlockwise.Same here we have to look from lower ring side view.

[@somajeetapaul9633]

dii.. you are just awesome.... app na jam k liye bhi coaching class kholdo.... bohot help hoggi... hum baccho ko...

[@mr.shubhamroy3784]

amazing explanation ...though I am not from chemistry background . (I am a pharmacist ),, still I understand ur whole lecture ,, u r really talented BEAUTY WITH BRAIN … thanks a lot mam..

[@laxmisule7862]

Video Created interest in stereochemistry and also easy to understand.

[@salmanraza9069]

Such me dear maam u very great talented not only teacher but great explainer with sweet voice of organic chemistry which make me easy to learn thank u maam 😊...love from Pakistan ...

[@sdeb3333]

Is the arrow rule really necessary? In all the examples if we disregard the arrow and order the groups in accordance with atomic number rule then the same order is found.. Please mention an example where the resulting order changes upon not adhereing to arrow rule..

[@suneetasabbella2367]

seriously in my life I have never done problematic part in chemistry but after watching your videos maam now I feel that I can do them thankyou so much for uploading such wonderful videos with crystal clear concept🥰🥰🥰🥰

[@vanshikakapil7932]

Thankyou so much mam your videos are really very helpful

[@04shakhawathossain75]

Maam, you are amazing!!!

[@sritamamaiti7203]

Ma'am, your lectures are awesome,👍lekin app agar thik hai ka use thoda kam kar dengi tab aur achcha lagega.Thank you

[@utkarshranjan5148]

Awesome Explaination 👌👌👌🌟 🙏🙏🙏

[@aswinit]

Wonderful. One small qn If stereo chemistry is not mentioned for Biphenyls and we are asked to find Configuration, how do we find?

[@love_guru531]

Didi aapke expalen krene ka trika muje pasnd aa gya

[@KomalYadav-xp2bf]

You have very nicely taught

[@vijayvishwamani3612]

simplified explanation ... thanks a lott madam

[@bhagyashreedeshmukh6124]

Mam thanks for this....very helpful👌👌

[@tahminaafroz7894]

Great

[@alphaclasses2914]

Thanku so much Mam👌👌

[@jatinpatro3541]

Thanku mam. I have made a wonderful note from this video. 👍

[@suryawanshishruthi225]

Tq mam fr ur hard wrk. Tq so much

[@shahidhassan5275]

Superb.... keep goinig

[@artipatel1808]

Very helpful 👏

[@joelkairanna2136]

i really enjoy your lectures ma'am 👍

[@UmerAli-bj4uy]

Very nice Explained 👌💙

[@mariashah8533]

Outstanding lecture👍👍

[@krishnadev4170]

Ma'am I have a confusion. You said that the cumulene (in 6:10) has plane of symmetry. But ma'am, the extreme two carbon atoms contain different groups. So, will there be POS?

[@poonamsahu3954]

Mam you are really awesome 😘😘

[@hrithikkumar6511]

awesome 👍

[@lakshaycoaching3348]

Thank you so much ❤️👍

[@anamikasingh9205]

Really very informative lecture.......

[@muhammadasif1737]

I love chemistry mam thanks♥~♥~

[@vijaykaul8627]

In allenes (even double bonds) terminal groups are inclined at 90 degrees and so are the double bonds. I am afraid there is nothing like staggard or eclipsed terminology used here.

[@subhajitgoswami7336]

Plz madam make a vedio syn/anti nomenclature for aldols. And E/Z descriptors for C=C, conjugated diene, triene, C=N and N=N systems. Plz plz plz make a vedio on above topics...

[@sdeb3333]

Bdw. ..great great great great...... (Infinity) video..

[@adarshnaikwadi3270]

good teaching

[@afsaralisiddiki2878]

@ 14:40 u gave an example and said about POS... Please can u explain how it is possible?? As we pass plan horizontally, we don't get the two equal half

[@Vijay-ny2mj]

Ma'am in cyclophane system, when we rotate it by 180 degree upper ring becomes lower and the substitute which is inside the plane becomes outside the plane,then if we do numbering it becomes s configuration. Am I right?

[@NeerajKumar-mq9ln]

Fabulous explanation maam

[@sindhukumari4299]

Thankyou mam you are really good

[@ranjeetasingh4247]

Nice examination mam Thanku so much

[@renudahiya608]

Vry nice mam...thanx vry much...

[@AartiSingh-lp2sk]

Thankuuu so mam great video

[@vismiforever8357]

Very simple and understandable

[@shantanunag3265]

Thik he ji

[@amey56]

Mam aapne 17.50 par Jo biphenyl Ka eg Diya thaa jisme 2 F thee aur 1 so3h thaa usme plane of symmetry thaa. Kyuki bond rotate ho raha thaa par plane of symmetry Kaha SE hogi because so3h toh different group hai naa F SE . Please mam reply . I am not able to understand it after even so much thinking.

[@BhanwarLal-fz8co]

2 bulky group nhi h isliye iska rotation nahi rukega or ye rotate krega jiske Karan ye planar structure ho jaega or isme molecular plane hoga Jo ki sabhi atoms ko half divide krega ....so isme plane if symmetry present h

[@JeevanPradhanG1]

Thank you ma'am for such a nice explanation

[@chemostudy790]

Very good explanation mam plz make a video on geometrical isomerism

[@nehashah2573]

Thank you Ma'am

[@jai73211]

Awesome mam

[@sabyasachi9988]

Mam please make videos on which chapter you should cover from books like d nasipuri,clyden and others book..

[@sanjaygaikwad8555]

At 5.54 min. you said that all are in one plane. Let me clear you one thing that the central double bond is in vertical plane while terminal double bonds are in horizontal plane. Rest is fine.

[@shubhendra8927]

Great effort.. thanks you so much

[@siyaramgaur5383]

Mam how are u doing numbering in ANSA compounds?????plz tell it also

[@avijitdas8897]

Good morning mam . happy upcoming durga puja

[@sangitakar6836]

mam isme toh apne dikhaya kya agar aesa case ho toh kya hona chahiye means agar even conjugated ho aur group same ho toh kya hoga dono type ka k case agar hua toh kya hoga wo bhi bata dijiye tab kesa rule use karna he?

[@trayambrathore7735]

Thank you mam

[@lalitkumarkaushik538]

You r going to teach group theory .. i want to learn form you .. you are teaching like a professional teachers .. thanks

[@shobhasnayak4281]

Nice explanation

[@B.Ed_B.Sc_M.Sc.Chemistry_SET]

Thank you very much mam

[@DeepakChauhan-zh3nw]

Ma'am if stereo is not mentioned in the compounds like allenes, biphenyls etc. Then how to find R,S configuration?

[@suneshchemistrysunesh938]

Great explanation. I enjoyed a lot👌

[@kapildevsharma3117]

Thanks ma'am 💐💐💐🙏🏻🙏🏻

[@monikarathee5085]

Mam ansa compds me jha Br and Cl lga h vo carbon no.3 kase h.smgh nhi aaya

[@amit-zy9dp]

Really good explanation

[@miyapuramsreekanth326]

Thank u soo much mam

[@sindhukumari4299]

Thanks again mam

[@Chemdeepti919]

Thankyou so much

[@Ashishkumar-vb7qh]

Aj aap chemistry ka... Exam hai kya..?

[@vasunakili5611]

Thank s madam garu

[@coolsahil304]

Mam, you said meso compounds are optically inactive because they contain a plane of symmetry only, but if a compound had centre of symmetry then???

[@vibhavsingh7944]

Molecule either having pos or cos , in both cases , molecule will optically inactive

[@mitenbhandari6329]

Miss allenes show axial chirality then why we change our configuration

[@rabiyamehandi6354]

Hello ma'am , Ma'am 31:51 pr aapne ek m numbering right hand s ki h, doosre m left hand s jbki hm apposite b toh skte th? Is there any reason for this ?

[@akankshasahu3998]

Mam plz provide question papers or assignment to practice for csir net

[@chirutha143varun]

At 4:40; if A=D or B=C My doubt is then they can have centre of symmetry?

[@statusbysk7305]

Thanks ma'am

[@afsaralisiddiki2878]

@ 20:20 Can you give some examples for polysubsituted biphenyl and its R/S nomenclature

[@MyGovindaraj]

Lecture is awesome..... Try to make a telegram group or whatsapp group

[@JChemistry]

Telegram group is already there Search JChemistry001

[@MyGovindaraj]

@@JChemistry thank you so much

[@zurtalabkhan8952]

Thanks Mam

[@prem_deharu]

Thanks

[@zurtalabkhan8952]

Good

[@anjubhukal7023]

Mam AGR bag ko vertically hold kre to whole beg look like in same plane... Plz clear mam this point ki molecule ko kse handle krna h

[@neelamgupta5174]

👌👌👌👌👌👌👌

[@anitasaini3040]

Mam is this enough for cucet? plzzz mam reply 🙏🙏🙏

[@divyanshichaturvedi7083]

Ma'am is there any video on the R S nomenclature of epoxides? I am facing few problems in that topic