Syntheses of new high-symmetric polyoxometalates with Mo4O4 cubane core

Presented here are a series of new polyoxometalates (POMs) containing Mo4O4 core. Thanks to the large Mo4O4 cubane template, the new cluster exhibits the same Td symmetry as classic Keggin POM but higher nuclear number and more heterometal atoms. Moreover, the third order nonlinear optical (NLO) properties of them are also researched.