Organic Chemistry - organic discussion!

1

Harry Potter ·2009-01-26 09:35:56

in terms of electrons

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? ·2009-01-26 09:50:45

basicity and nucleophilicity has some difference dude !...

thats why they have two different names !

good work though subash !! :)

did u get btw how is it determined ?

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Harry Potter ·2009-01-26 09:50:21

i think the HS^- is more stronger than OH^-

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Harry Potter ·2009-01-26 09:49:23

but it doesnt mean itz a strong nucleophile subash

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? ·2009-01-26 09:48:23

subash but that just simply implies that OH^- is more BASIC than HS^-

its not neccessary that it is the same in the case of nucleophilicity !

after all they are two different terms :D

hmm ...ultimately compare theIR electronegativity then ! :D

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11

Subash ·2009-01-26 09:45:10

so by comparing H₂O is a weaker acid than H₂S

so OH- would be the stronger base and hence nucleophile

am i rite

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? ·2009-01-26 09:43:49

no subash ! .. that was for prajith ! ..:)

btw, its applicable to u too ! ;)

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? ·2009-01-26 09:42:26

subash no yaar !! ..its not ! ..its the other way round!

coz u know ...just compare the conjugate of h₂o and h₂s

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11

Subash ·2009-01-26 09:41:16

@ unique did u say that to me or what

asking because ur reply had same timing as mine

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? ·2009-01-26 09:39:35

no u are not !...u have to compare the conjugate acid n base for this !

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11

Subash ·2009-01-26 09:39:15

i think i just saw this question H₂O is more stable than H₂S so OH- would obviously be the better nucleophile

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Harry Potter ·2009-01-26 09:36:52

hey u r preparing well for IIT unique

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Harry Potter ·2009-01-26 09:36:10

m i rite unique

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Harry Potter ·2009-01-26 09:51:45

becaz OH^- bond is tough to break than HS- moreover O is more electronegative than Sulphur am i rite unique

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? ·2009-01-26 09:34:59

and prajith ?.. u did not get my question correctly ?..,what are u doing with bonds here ?... throw them away !! .. n think the other way !

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? ·2009-01-26 09:33:37

ok sankara and in ur amine question .. u are ,missing a catalyst ..otherwise reduction of that amino compound would give only aniline !

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Harry Potter ·2009-01-26 09:29:05

mone unique hwz HS Bonds related is it stronger than OH^-

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msp ·2009-01-26 09:27:07

UNIQUE I HAVE MY REVISION EXAMS TOMORROW.I HAVE TO GET UP EARLY AND I HAVE TO COMPLETE MY TODAYS WORK CAN I JOIN IN THIS DISCUSSION TOMORRROW

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msp ·2009-01-26 09:24:48

UNIQUE CAN U GIVE ME SOME RELATION ABT ELECTRONEGATIVE OF THE SULPHUR AND OXYGEN

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1

? ·2009-01-26 09:21:22

now what do u think about this ?

is HS^- less nucleophilic than OH^- ?

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msp ·2009-01-26 09:21:21

I AM ALSO WEAK IN MECHANICS ESPECIALLY IN ROT MECHANICS

CAN U CREATE A DISCUSSION ON THAT CHAPTER ALSO

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? ·2009-01-26 09:19:21

you people know chemistry much .... u are helping me guys !!

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prateek punj ·2009-01-26 09:18:57

the timing of mine and sankara post is same...so it struck in our mind at the same time....

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msp ·2009-01-26 09:18:38

POST UR DISCUSSION ON NITRO CPDS AND AMINES

I WAS IN GR88888888 CONFUSION

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1

Harry Potter ·2009-01-26 09:18:04

hmm i cant wat i'll burst out now!!!!!!!!!!

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Siddharth ·2009-01-26 21:25:33

@srinath ...you said weaker bases make better nucleophiles. Can you give an example? As far as I understand weaker base has better leaving ability...

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19

Debotosh.. ·2009-08-19 22:09:13

a small teaser here : quiniclidine and triethylamine are excellent bases (known from pka values)...so can they be excellent nucleophiles too....discuss separately for both compounds !!

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1

voldy ·2009-02-10 01:05:22

comparing the e.c of the ions and their atoms should give you the answer.

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Harry Potter ·2009-01-29 02:12:54

I think the least stable will be B-

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? ·2009-01-29 02:08:05

out of the following ions,

identify the least stable ion !

Li^-, Be^-, B^- , C^- ??

WITH REASON !!

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