[Zn(H2O)4][Zn2Sn3Se9(MeNH2)]: a robust open framework chalcogenide with a large nonlinear optical response†
Abstract
[Zn(H2O)4][Zn2Sn3Se9(MeNH2)] has an open polar framework based on supertetrahedral clusters with a unique double connectivity mode and exhibits a strong second harmonic generation response, excellent acid stability and