Crystal structure of samarium hexamolybdoaluminate Sm[Al(OH)6Mo6O18] · 11H2O |
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Authors: | G. B. Andreev A. M. Fedoseev N. A. Budantseva M. Yu. Antipin |
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Affiliation: | (1) Institute of Physical Chemistry, Russian Academy of Sciences, Leninskii pr. 31, Moscow, 117915, Russia;(2) Nesmeyanov Institute of Organoelement Compounds, Russian Academy of Sciences, ul. Vavilova 28, Moscow, 119991, Russia |
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Abstract: | The structure of a new complex of samarium(III) with a hexamolybdoaluminate ion, Sm[Al(OH)6Mo6O18] · 11H2O, was established by the methods of X-ray diffraction analysis. The crystallographic data are as follows: sp. gr. Pbc21, a = 10.927(4) Å, b = 11.757(5) Å, c = 22.327(9) Å, V = 2868(1) Å3, Z = 4, ρ calcd = 3.040 g/cm3, R = 0.084, R W = 0.198. In the [Al(OH)6Mo6O18 3? anion, an Al atom is surrounded by six Mo atoms with distorted octahedral coordination. The anions are linked into chains via Sm atoms. The coordination polyhedron of a Sm atom is a tricapped trigonal prism with the vertices being occupied by two terminal oxygen atoms of two adjacent anions and seven water molecules. |
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