The syntheses of porous materials are of exceptional interest within the scientific community at the current time, due to their diverse properties and therefore applications. Herein we present a 4,3 connected polyoxometalate (POM) framework that is composed solely of keggin polyanions linked via W-O-M bridges. Synthesis of this material is achieved through the use of an essential structure directing organocation that can be exchanged from within the crystaline material due to the high ion mobility within the nanoscale voids. Counterion exchange has been monitored using a variety of techniques, and the structural integrity of the exchanged material confirmed.