K2Re(NCS)6: A weak ferromagnet |
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| Authors: | Maliheh Mousavi Virgine Béreau Carine Duhayon Jean-Pascal Sutter |
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| Institution: | 1. CNRS, laboratoire de chimie de coordination (LCC), 205, route de Narbonne, 31077 Toulouse, France;2. UPS, INPT, LCC, université de Toulouse, 31077 Toulouse, France;3. IUT Paul-Sabatier, avenue G.-Pompidou, BP 20258, 81104 Castres, France |
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| Abstract: | The preparation of the potassium salt of hexathiocyanate Re(IV) as a pure and crystalline solid is described. The crystal structure for {K(H2O)2}2{Re(NCS)6}] (P21/c, a = 8.29132(8) Å, b = 15.0296(2) Å, c = 8.5249(1) Å, β = 90.885(1)°, V = 1062.21(2) Å3) revealed the formation of a 3-D coordination polymer based on K-S linkages. This organization leads to rather short intermolecular S···S contacts. The magnetic behavior for the compound is characterized by substantial antiferromagnetic interactions (with Curie-Weiss parameters C = 1.93 cm3mol−1 and θ = −171 K) that in turn lead to a weak ferromagnet with TC = 13 K. |
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| Keywords: | Rhenium Thiocyanate Molecular magnetism Canted magnet Crystal structure |
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