| Summary: | Two new selenite SrZn2(SeO3)3 (1) and SrZn0.68Cu0.32(SeO3)2 (2) were synthesized by the hydrothermal technique under autogeneous pressure. The crystal structure of both compounds was solved from X-ray diffraction data. Compound (1) was crystallized in P1¯ triclinic space group. However, compound (2) was crystallized in P21/n monoclinic space group. Infrared studies confirm the presence of all vibration bands in both structures. The temperature dependence of the magnetic susceptibility was measured in the temperature range of 10–300 K at different magnetic field intensities for both compounds. No magnetic properties were detected for compound (1). Mean while, compound (2) displayed antiferromagnetic properties. Keywords: X-ray diffraction, IR, Antiferromagnetic, Selenite
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