NaBaMIIIQ3 (MIII = Al, Ga; Q = S, Se): first quaternary chalcogenides with isolated edge-sharing (M III2Q6)6− dimers†
Abstract
In this study, a new series of NaBaMIIIQ3 (MIII = Al, Ga; Q = S, Se) compounds featuring the first discovered isolated edge-shared (MIII2Q6)6− dimers in known quaternary chalcogenides were synthesized. All compounds showed clear optical anisotropy (Δn = 0.04–0.12) mainly derived from the contribution of isolated (MIII2Q6)6− dimers by the real-space atom-cutting method.