Breaking Hydrogen Cyanide

 CN triple bond length in HCN, hydrogen cyanide is $1.156\,\dot{A}$

$f_{res}=0.122\cfrac{c}{BL}$

$f_{res}=0.122*\cfrac{299792458}{1.156}*10^{10}$

$\cfrac{f_{res}}{10^{15}}=316.390\,Hz$

Breaking Hydrogen Cyanide HCN CN Bond 316-831 Hz

This frequency will break nitrogen from carbon in hydrogen cyanide.  As for cyanide ion in ammonia salt.

$BL=1.14\,\dot{A}$

$f_{res}=0.122*\cfrac{299792458}{1.14}*10^{10}$

$\cfrac{f_{res}}{10^{15}}=320.831\,Hz$

Breaking Ammonium Cyanide NH_4CN CN Bond 320-831 Hz

And life goes on.