N - (phosphonomethyl)glycine (glyphosate) is a phosphonomethyl derivative of the amino acid glycine and a highly important herbicide. Formulations of glyphosate are often made in the form of water - soluble solids; isopropylammonium, potassium, sodium and particularly ammonium salt. The aim of this experiment will be to characterise the structures of these agrochemicals in detail including fundamental properties such as the zwitterionic hydrogen bonding in glyphosate itself and its anionic forms of great importance in understanding the way in which this molecule blocks the action of 5-enolpyruvylshikimate 3-phosphate synthase. For the salts the aim is to study some key dehydration and re-hydration chemistry of the bulk materials of importance to their storage and delivery as agrichemicals. This work forms part of the research of an ILL student concerned with the structures of agrochemicals and would also provides the first opportunity for NPD experiments within that project.