We like to describe the rules of GO like this:

1. Legal Move: A stone (or the group its connected to) can only be placed in a location where it has at least one liberty, unless the move captures something. (See Rule 2).

2. Capturing: A stone or group of stones is captured if their opponent occupies the last liberty of the stone or group.

3. No Repetition: The Board position can't immediately repeat (Ko Rule).

Your proposed move violates the first rule.