[kirushanth]

Is Kornblum's rule(http://en.wikipedia.org/wiki/HSAB_theory#Kornblum.27s_rule) usable? Because there seems to be a lot of places where it doesn't seem to work. For example, in the very second paragraph of that section on Kornblum's rule in the wikipedia page, it is mentioned that carbon of CN- attacks an alkyl group regardless of the type of substitution that takes place.

[kirushanth]

Somebody please help me out!

[natraj]

Is Kornblum's rule(http://en.wikipedia.org/wiki/HSAB_theory#Kornblum.27s_rule) usable? Because there seems to be a lot of places where it doesn't seem to work. For example, in the very second paragraph of that section on Kornblum's rule in the wikipedia page, it is mentioned that carbon of CN- attacks an alkyl group regardless of the type of substitution that takes place.

Regards,
Nataraj


Is Kornblum's rule is accessible for everything ?
Could you you explain the two different group bonding.

*[MOD Edit]*  Removed link.  Please only put advertisement links in your sig, if at all

[Jasim]

I always thought of HSAB (Hard/Soft Acid Base) as being more of a conceptual aid rather than an empirical tool. It is my opinion that HSAB can be useful for developing a better conceptual understanding, but it's not reflective of reality and therefore is very limited in it's practical application. You can't easily express HSAB in a quantitative form, unlike thermodynamic/kinetic relationships.

But these are just my opinions.