differences between hydrogen bonding

[Vlad Cojocaru <Vlad.Cojocaru[ AT ]mpi-bpc.mpg.de>]

 Hi!
 I am trying (using Gaussian 94) to estimate the differences between
 hydrogen bonding between A-T and 2-amino purine-T. I also have other
 base analogues with which I want to do the same.
  Would you please indicate me some references or some advices about the
 approach for such kind of studies?
  Thanks a lot in advance,
 vlad
 --
Vlad Cojocaru
 Max Planck Institut for Biophysical Chemistry
 Deparment: 060
 Am Fassberg 11, 37077 Goettingen, Germany
 tel: ++49-551-201.1389
 e-mail: Vlad.Cojocaru[ AT ]mpi-bpc.mpg.de