Coverage dependence of glycine adsorption on the Ge(100) − 2 × 1 surface

► Glycine adsorbs on Ge(100) − 2 × 1 by O-H dissociation. ► Major products are O-H dissociated adducts with some exhibiting N dative bonding. ► Minor product is dual O-H and N-H dissociated adduct. ► Coverage dependent product distribution is observed.