ZrOCl2•8H2O (32 mg, 0.2 mmol), ellagic acid (60 mg, 0.2 mmol), deionized water (2.5 mL), acetic acid (1.0 mL) and trioctylamine (TOA, 1.0 ml) were combined in a borosilicate 3.3 glass tube (Duran 12 × 100 mm, DWK Life Sciences). The glass tube was then sealed with a PBT cap containing a PTFE seal and heated at 160 °C in an aluminium heating block for 1 h while stirring. After cooling the glass tube to room temperature, the resulting brown suspension was filtered and washed with 50 mL of deionized water. The remaining brown solid was then dried overnight at 80 °C. The glass tube was then sealed with a PBT cap containing a PTFE seal and heated at 160 °C in an aluminium heating block for 1 h while stirring. After cooling the glass tube to room temperature, the resulting brown suspension was then centrifuged at 10,000 rpm for 10 minutes and decanted. The remaining brown solid was then dried overnight at 80 °C. PXRD indicated a phase mixture with SU-102.