Preparation and Crystal Structure of Tripotassium Sodium Disulfate

抄録

The title compound, K₃Na(SO₄)₂, was isolated, and the crystal structure was determined by the single-crystal X-ray diffraction method at 90 K. It crystallizes in the trigonal space group P3m1 with a = 5.6346(8)Å, c = 7.2543(15)Å, V = 199.46(6)ų, D_x = 2.767 g/cm³, and Z = 1. The R1 [I > 2σ(I)] and wR2 (all data) values are 0.0244 and 0.0653, respectively, for all 217 independent reflections. The crystal consists of six-coordinated sodium ions and ten-coordinated and twelve-coordinated potassium ions, which are connected by sulfate ions.