Synthesis, Structure, and Magnetic Properties of A2Cu5(TeO3)(SO4)3 (OH)4 (A: Na, K): The First Compounds with a 1D Kagome Strip Lattice.

Single crystals of the title compounds are prepared by hydrothermal reaction of 1.5:0.5:2 molar mixtures of CuSO4, TeO2, and NaOH or KOH (autoclave, 190 °C, 5 d; cooling rate of ≈3 °C/h).