Study of hydrogen positions in Cu(NO₃)₂.2.5H₂O from PMR and DMR

Proton magnetic resonance (PMR) is used to determine the orientation of the proton-proton vectors of the water molecules in Cu(NO₃)₂.2.5H₂O. From a deuteron magnetic resonance (DMR) study of Cu(NO₃)₂. 2.5D₂O the orientations of the electric field gradient tensor at the deuterium sites are found. The NMR data are coupled with the hydrogen bonding scheme in the crystal and the crystal structure to determine the hydrogen atom positions.