You have resurrected an ancient thread. Assuming your oscillator is 1MHz )) you would need multi-stage divider ICs (or a micro) to reduce the frequency to 100Hz. A 3.2768MHz oscillator would make the division simpler.
The Cmos inverter must have a high enough frequency to work.
An ordinary CD4xxx inverter might work up to about 3MHz if the supply is 9V).
74HCxxxx works up to tens of MHz.
We don't think you used the important capacitors. We don't know which Cmos inverter you used and we don't know the supply voltage.
If not then if its just 100hz you want then maybe a different freq xtal along with a cmos chip might be a better way, like a 4060 and a 4.096mc's xtal.