To derive a suitable starting force field to refine empirical force constants for the hydrogen-bended glycyl COOH group of glutathione, we have obtained scaled ab initio force fields for a non-global-minimum conformer of glycine with two H2O molecules associated with the COOH group. Scale factors were derived from a revised vibrational analysis of the isolated glycine global-minimum structure, with particular attention to reproducing infrared intensities as well as frequencies of four matrix-isolated isotopic species and making use of the dipole derivative distribution in assigning bands. The force constants for the glycine molecule are not found to be significantly affected by the torsional state of the H2O molecules if the structure is optimized. This procedure may have general applicability for deriving force fields of structural components that can be related to non-global-minima conformers of model molecules.