33see in ideal condt 50% inveersion in SN1 after c+ is formed
but if C+ is not too stable due to poor solvation then....
Most SN1 reactions do not lead 100 % racemization. This is because :
(a) retention occurs more than inversion
(b) inversion occurs more than retention
(c)solvation of ion pairs is not effecient
(d) solvation of ion pairs is effecient
-
UP 0 DOWN 0 0 32
32 Answers
33
1Priyam how can you say that inversion is more and not retention
1solvation is to get surrounded by the solvent ions..
like Li+ gets easily solvtaed by H20 molecules in aqeous soln.
so if C+ gets solvated by ions (e- donating ones) that will mean it is very stable carbocation..
33Aman ek thread me ek doubt..
:p wale doubt ke liye naya thread
;)
1skygirl:
heh
there are 7 ':P's in dat thread
alkyl halipe
abhisheks:
u counted
skygirl:
most ppopular smiley :P
abhisheks:
:P
skygirl:
most active smiley : ":P"
nishant bhaiya ko bolenge yeh include karne ke liye :P
abhisheks:
8 hai
339 :P
ho gaya
now here it comes the 10th :P
sorry it was 11th in this thread
33Sky:arey abhi mujhe lag raha hai ki 'a' hoga
woh SN1 me
aman's question
main sn1 ko sn2 samajh rahi thi
:P
me: nahi inverion > retention
Sky: ??
sn1 me C+ form hota hai naa?
me: sir had given 2 page notes on 100% racemistaion
why its not alsways in SN1
Sky: agar full fledged C+ form n ho tab inversion
me: ..
6:22 PM
thats why i'm saying
nahi to i have no idea
sirs notes
:P
Sky: par sn1 me tendency to wahi rehta hai ki C+ form ho jaye hai naa ?
me: aur maine likha bhi tha use :P
6:23 PM
haa par if C+ stability is not so much then nu doesnot wait for departing LG but attacks frm behind
so some inverions
Sky: okie
then a and b
6:24 PM
dat s too impossible :P
me: ;)
;-|
1FRIENDS,,,, SOLVATION OF ION PAIRS SE KYA FARAK PADEGA ???????
1bt in SN1 back attack will not b preffered due to stearic hinderence
33Reason for no 100% racemisation is (b).... and reason of (b) is (c)+other reasons....
1FRIENDS,,,, SOLVATION OF ION PAIRS SE KYA FARAK PADEGA ???????
11Whether it is (a) or (b) depends on the nucleophile and the reactant, right? So it's got to be either c or d.
33It got to be multiple correct..
but if its single correct then (b) 99%............ (c) 1% :P
and p here is not my signature :P