Two types of coordination polymers based on cluster anions [Re4Q4(CN)12] (Q = S, Se) and cations of rare-earth metals Ln: Syntheses and crystal structures |
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| Authors: | Olga A EfremovaYuri V Mironov Natalia V KuratievaVladimir E Fedorov |
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| Institution: | Nikolaev Institute of Inorganic Chemistry, Siberian Branch of the Russian Academy of Sciences, 3 Acad. Lavrentiev Prospect, 630090 Novosibirsk, Russia |
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| Abstract: | The reactions of aqueous solutions of the tetrahedral cluster anions Re4Q4(CN)12]4− (Q = S, Se) with lanthanide chlorides resulted in the crystallization of the formed compounds into two main structural types {Ln(H2O)4(H2O)2/3Cl1/3}3{Re4Q4(CN)12}2]·2H2O (Ln = La-Gd, Q = S, Se) and K0.5(H)0.5{Ln(H2O)4}{Re4S4(CN)12}]·nH2O or (H){Ln(H2O)4}{Re4Se4(CN)12}]·nH2O (Ln = Tb-Lu). Compounds of the first type crystallize in the hexagonal crystal system (space group Р63/m) and they have a three-dimensional polymeric structure; compounds of the second type crystallize in the orthorhombic crystal system (space group Cmcm) and they have a two-dimensional crystal structure due to the polymeric anion {{Ln(H2O)4}{Re4Q4(CN)12}]−}∞∞. |
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| Keywords: | Rhenium tetrahedral clusters Cyano-bridged compounds Lanthanides Synthesis Crystal structure |
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