I am afraid you are not understandingthe calculations you are doing. Unfortunately, you cannot learn quantumchemistry by just asking some questions here. I really encourage you to askyour tutor/teacher/supervisor to lecture you on what you are doing. I know thatif I tell you to read some textbooks such as Jensen's or Cramer's will sound asa lot of work, but otherwise running calculations is pointless.
To answer your questions (and to showyou that you need to understand what your are doing):
1. You cannot rebond two atoms. Thebonds are formed by the electrons governed by the Schdinger equation. If whatyou mean is to generate a new input putting those atoms at a shorter distance,that can be done. After you optimize the geometry you will recover the samestructure you had with the atoms not bonded...
2. An image cannot be used for furthercalculation. You probably mean the modified geometry (after the optimisation),which, as I said, will be the same as your first structure. Of course, you canalways use any geometry for further calculation: optimized or not. It dependson what you are studying and why you do it. From a quantum chemical viewpoint,minima are not different from any other geometry. They are relevant because ofstatistical mechanics (and the harmonic approximation).
Yours,
Ramon
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