« first day (22 days earlier)      last day (209 days later) » 

00:40
@Safdar but then what becomes of the hybridised orbitals? First of all where is hybridisation and MO theory linked(if it is)?
 
12 hours later…
12:24
@sai-kartik Bro.. There is no hybridised orbitals.. you just combine different amounts of atomic orbitals to achieve minimum energy.. So in short, hybridisation and MO theory are on different planes of theory..
 
1 hour later…
13:46
ahh ok..
 
1 hour later…
15:00
@AniruddhaDeb we can talk here as well..
ok this is nice.. Is this tied to chem SE?
yeah it is
This is what I thought would happen in that q. Middle compound has two isomers (exo and endo) and compound on right would have 4 (exo, endo and one chiral center on the methylpentane attached to the boron. Coudn't calculate DU for middle and right compounds.
@AniruddhaDeb why not find number of hydrogens and carbons and then use the formula....
yeah but there's no boron in the formula
How many stereocenters? I'm getting 8 only...
@RahulVerma 10 if you count sp2 C's in top-right.
There are 8 optical centres and 2 geometric centres so 10 stereocentres total
2
15:14
@AniruddhaDeb Similar to norbornane?
@Safdar yeah but it has 3 C atoms on each fused ring, compared to 2 for norbornane
@AniruddhaDeb I mean't a similar structure couldn't get a proper comparison..
I actually found a reference for that reaction just now. Check pubs.acs.org/doi/abs/10.1021/ja01021a046
@AniruddhaDeb didn't knew that. Thanks!
15:29
@AniruddhaDeb how this has endo-exo isomerism? It doesn't has any substituent...
16:00
@RahulVerma I thought the larger ring would have an up-down orientation (somewhat similar to chair/boat forms of cyclohexane), but you're right: there are no exo/endo isomers for this compound.

« first day (22 days earlier)      last day (209 days later) »