Approximate value for the stretching frequency of a bond in IR spectrum is given by the expression:
1
\(\overline \nu = \frac{1}{{2\pi C}}\sqrt {\frac{f}{\mu }} \)
2
\(\overline \nu = \frac{1}{{2\pi C}}\sqrt {\frac{{\mu f}}{2}} \)
3
\(\overline \nu = \frac{1}{{2\pi C}}\sqrt {\frac{\mu }{f}} \)
4
\(\overline \nu = 2\pi C\sqrt {\frac{f}{\mu }}\)