“…80,81 Later this collaboration was resurrected and led to a series of publications where a variety of simple heterocyclic compounds prepared in St Andrews were subjected to detailed spectroscopic analysis and accompanying computational study: isothiazole, 82,83 1,2,5-thiadiazole, 84 1,2,5selenadiazole, 85 1,3,4-oxadiazole, 86 1,3,4-thiadiazole, 87 1,2,3-thiadiazole, 88 the mono N-oxides of pyridazine, pyrimidine and pyrazine, 89 1,2,3-triazine, 90 and formamidinium formate. 91,92 More recently Alan has provided the synthetic component for a multi-national project on high resolution spectroscopic and theoretical studies of simple organic compounds, including 1-and 2-methyltetrazoles, 93 1,3,5-cycloheptatriene, 94,95 norbornadiene and quadricyclane, 96,97,98 azulene, 99,100 6,6-dimethylfulvene, 101 and 4-pyranone. 102 During his years in St Andrews Alan has taken a keen interest in the history of chemistry there and has unearthed and preserved many historical items.…”