Why is there two different kinds of hydrogen bonding in solid bicarbonates $\ce{NaHCO3}$ and $\ce{KHCO3}$? In both cases we consider anions of each for hydrogen bonding .

enter image description here

The anions involved in hydrogen bonding are the same for $\ce{NaHCO3}$ and $\ce{KHCO3}$. But, why is there a difference in hydrogen bonding?

  • 6
    $\begingroup$ I think, this can only be answered by looking at the crystal structures, and then by saying ‘because this is what the crystal structure looks like.’ $\endgroup$
    – Jan
    Dec 11 '16 at 13:47

I found something interesting in Acta Crystallogr. 1952, 5 (2), 292–292, which is attached below.

enter image description here

As someone rightly pointed out in the comments, we'll know this only if we know the crystal structure of the compound in question.

What's interesting to note is that hydrogen bonding, and the arrangement of atoms in space under influence of the same varies from compound to compound, and is dependent on the crystal structure of the same.


Your Answer

By clicking “Post Your Answer”, you agree to our terms of service, privacy policy and cookie policy

Not the answer you're looking for? Browse other questions tagged or ask your own question.