Conformational search: method and units

Dear Avogadro’s users,
does anybody know:

  1. the method (Monte Carlo,…) used for the conformational search
    procedure “systematic rotor search” and in case the related references;

  2. what are the units for the energy (kcal/mol, a.u.,…) obtained by
    the conformational search method.

Thanks in advance
Best regards

 Andrea

Universita’ di Catania - A.P.Se.Ma.
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