We have recently determined the structures of methanol-monoammoniate, and Me-hemiammoniate from neutron powder data. These are found to have different degrees of C-H...O hydrogen bonding and bond ordering, which are likely to be manifested in the thermal expansion anisotropy. The objective of this proposal is to measure the thermal expansion of methanol mono-ammoniate and methanol hemi-ammoniate as a function of temperature, from 4.2 to 180 K, both on warming and cooling. Simultaneously, we will collect Raman spectra from these samples in the range 100 ¿ 3200 cm-1. This will, (i) provide a comparison with the thermal expansion measurements we have made with methanol monohydrate, (ii) allow us to identify any structural changes caused by ordering of methyl groups in the crystal, and (iii) provide a foundation for future single-crystal and high-pressure powder studies.