Zr12-decanoate, dodecanoate and oleate. For decanoic and dodecanoic acid, zirconium propoxide (2.25 mL, 5 mmol, 1 eq.) was mixed with 8 equivalents acid and diluted with DCM to 0.33 M and 0.25 M respectively in Zr. Decanoic and dodecanoic acid are solids and therefore the concentration had to be lowered in order to dissolve these acids. For oleic acid (which is a liquid), the volume is already 15 mL without DCM. Therefore, no DCM is added and a 40 mL flask is used. After stirring 24 hours at 30°C, the DCM was evaporated using the schlenk line for both Zr12-decanoate and Zr12-dodecanoate, while the oleate sample can be purified as such. The solution for each cluster was divided over 2 centrifuge tubes and ACN (10 mL per tube) was added to precipitate the clusters. Via centrifugation (5000 rcf, 4 min), the cluster precipitate was separated from the supernatant and redissolved in DCM (1 mL). To this 6 mL acetone was added to precipitate out the cluster. This last step was repeated twice and finally, the clusters were dried under vacuum. Zr12-decanoate and Zr12-dodecanoate were obtained as waxy solids with a yield of 80 % and 93 % respectively.