Tuning birefringence in alkaline-earth metal oxyhalides through diverse mixed-cation coordination architectures

A series of new alkali-earth metal complex oxyhalides, Ba5Pb4O4Br10 (4PbO·5BaBr2), Ba2CdSe2O6Cl2 (BaCdSe2O6·BaCl2) and BaCdSeO3Br2 (CdSeO3·BaBr2) have been synthesized by a high-temperature solution method. These compounds exhibit layered structures composed of...