In this work, we investigate the FTIR spectra of vacuum-isolated, supersonically cooled, conformationally resolved 1:1 complexes of TH with itself and with water (w), which are better suited for a rigorous theory-experiment comparison than the infinite solids. A smaller hydroxylamine (N,N-diethylhydroxylamine) monohydrate has recently been structurally characterised in the gas phase and the parent hydroxylamine has also been investigated at high spectral resolution . Building on these experimental benchmark data for closed shell systems, we characterise the open shell 1:1 complexes of TH with T in the OH stretching region, to see whether there is evidence for degenerate hydrogen atom transfer (HAT) after OH stretching excitation.