Professor Henry Taube, Nobel Laureate for Chemistry in 1983, is generally regarded as the most outstanding Inorganic chemist in the United States. He carried out early work of importance on the nature of inorganic oxidation and reduction from 1941. However, it is his work from the early 1950's, in which he has concentrated specifically on the study of electron transfer processes between metal ion in solution, which has provided the experimental basis for the very great advances in our knowledge of the factors controlling the dynamics of these most basic chemical processes. In particular, his pioneering studies of intramolecular electron transfer dynamics in bridged systems have made possible detailed comparisons with theory, and led to interpretation of such complex processes as the primary step in photosynthesis. His interaction with Australian scientist in these areas is extensive and of long standing.