The aim is use time-resolved SANS to monitor the changes in aggregation structure of the Trost ligand[1] Pd-catalyst [(DACH-phenyl-TSL)Pd+(η3-C6H9)]BArF- 1 (Figure 1 left) in situ whilst it is participating in a catalytic reaction cycle. The experiments will help to reveal further important details of Pd-Trost ligand oligomer structure for (1)n whilst participating in a catalytic cycle. This will provide valuable information for taming this system so that its power can be reliably and reproducibly harnessed for synthesis.