G98: Oniom energies

[Dr Reinaldo Pis Diez <pis_diez(-(at)-)quimica.unlp.edu.ar>]

	Dear ccl'ers,
 		I'm doing some calculations using the oniom method as implemented in g98.
 		My system is a 30-atoms organic molecule surrounded by almost hundred
 solvent molecules. I'm using dft/mm (svwn:uff) for higher and lower layers,
 respectively.
 		The first calculation seems to be a mm one giving an energy which I call
 E_3.
 		Then, the program jumps into the dft job achieving self consistency with
 an energy E_scf.
 		As a third step, it enters into another job having less electrons than
 the higher layer, organic molecule, giving an energy E_1.
 		Finally, the program enters link 102 and prints the following
 ONIOM: calculating energy.
  E123=      E_1      E_scf     E_3 (three real numbers)
  ONIOM: extrapolated energy =    (a fourth real number calculated
              				 as, I guess, E_scf - E_1 + E_3)
 	Now my questions:
 i) Is the "oniom extrapolated energy" the valid  energy in an oniom
 job?
 ii) What does E_1 mean?
 	Thanks in advance. I summarize to the list.
 	Regards,
 						Reinaldo