TY - GEN A1 - Müller, Carola J. A1 - Schwarz, Ulrich A1 - Schmidt, Peer A1 - Schnelle, Walter A1 - Doert, Thomas T1 - High-Pressure Synthesis, Crystal Structure, and Properties of GdS2 with Thermodynamic Investigations in the Phase Diagram Gd-S, T2 - Zeitschrift für anorganische und allgemeine Chemie N2 - Gadolinium disulfide was prepared by high-pressure synthesis at 8 GPa and 1173 K. It crystallizes in the monoclinic space group P121/a1 (No. 14) with lattice parameters a = 7.879(1) Å; b = 3.936(1) Å, c = 7.926(1) Å and β = 90.08(1)°. The crystal structure is a twofold superstructure of the aristotype ZrSSi and consists of puckered cationic [GdS]+ double slabs that are sandwiched by planar sulfur sheets containing S22– dumbbells. The thermal decomposition of GdS2 proceeds via the sulfur-deficient polysulfides GdS1.9, GdS1.85 and GdS1.77 and eventually results in the sesquisulfide Gd2S3. GdS2 is a paramagnetic semiconductor which orders antiferromagnetically at TN = 7.7(1) K. A metamagnetic transition is observed in the magnetically ordered state. KW - Polysulfides KW - Gadolinium KW - High-pressure synthesis KW - X-ray diffraction KW - Phase diagrams Y1 - 2010 UR - http://onlinelibrary.wiley.com/doi/10.1002/zaac.201000015/full U6 - https://doi.org/10.1002/zaac.201000015 SN - 1521-3749 VL - 636 IS - 6 SP - 947 EP - 953 ER -