Re: Dihedral Angle Driver and HyperChem

["tamasgunda[ AT ]tigris.klte.hu" <Tamas Gunda[ AT ]www.ccl.net>]

 Patrick Kano wrote:
 >  I read that the MM2 force field contains a DIHEDRAL ANGLE DRIVER, which
 > allows the user to scan part of the potential surface in search of local
 > minima.
 >
 >  Can anyone tell me if the MM+ force field which is available in HyperChem
 > (and which is a variation of the MM2 force field) contains this facility?
 If
 > so, how does it compare to other conformational search methods such as
 > simulated annealing.
 Not the forcefields itself contain the dihedral driver, but the
 program & interface, in which the MM procedure has been implanted and
 realized.
 In HyperChem there is no dihedral driver, but you can yourself
 "program" it by creating a script file. Consult the manual of
 HyperChem.
 It seems to be difficult only the first time.
 best wishes
 Tamas Gunda
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