Figure 1 (IMAGE) Science China Press Caption Development of the MCSC family, including basic-supertetrahedral Tn clusters, capped-supertetrahedral Cn clusters, penta-supertetrahedral Pn clusters, pseudo-Tn clusters (oxychalcogenide o-Tn clusters, super-supertetrahedral Tp,q clusters and Tn (coreless) clusters) and TO2 clusters. Credit ©Science China Press Usage Restrictions Use with credit. License Licensed content Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.