Abstract Piezoelectric materials usually exist in solid-state forms with obscure structures, hindering atomic-level understanding of structure-property relationships. Here, we report the piezoelectric high-nuclearity titanium-oxide molecular cluster, Ti26Pb10, constructed via a dopant metal coordination strategy. The cluster framework comprises 26 Ti atoms linked by binuclear units, with 10 Pb2+ ions anchored through distinct coordination: 2 embedded and 8 surface exposed.
