I How can I estimate the K force constant for bond types without special tools?

[Lahearle]

TL;DR Summary

Trying to find K constant of a single hydrogen and carbon atom

Hi I'm trying to throw together a cool chart, I need the K constant so I can divide K/U to get the CM-1 measurement of every element for every bond type.

I don't have any special tools for this, no force gauges. Does anyone have any idea how to at least roughly get an accurate depiction of this?

Was thinking an oldschool scale and dividing the mole by the size of an atom????

Or does anyone have a link to any charts that contain this???

 

[DrClaude]

I have difficulty understanding what you are after and what you are seeking to do, but I think the following will help.

Go to https://webbook.nist.gov/chemistry/form-ser/, then enter the diatomic molecule you are after (CH), then on the page corresponding to the molecule click on Constants of diatomic molecules. Note that the results are in reverse order of energy, so the ground state is at the bottom of the table. For CH, you should find that the vibrational frequency, $\omega_\mathrm{e}$, is 2858.5 (in units of cm^-1).

 

[Lahearle]

I have difficulty understanding what you are after and what you are seeking to do, but I think the following will help.

Go to https://webbook.nist.gov/chemistry/form-ser/, then enter the diatomic molecule you are after (CH), then on the page corresponding to the molecule click on Constants of diatomic molecules. Note that the results are in reverse order of energy, so the ground state is at the bottom of the table. For CH, you should find that the vibrational frequency, $\omega_\mathrm{e}$, is 2858.5 (in units of cm^-1).

That's exactly what I was looking for thanks