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Structural and Vibrational Studies of Sr 2 [W(CN) 8 ]·10H 2 O
Author(s) -
Daszkiewicz Marek,
Marchewka Mariusz K.,
Typilo Iryna,
Gulay Lubomir D.,
Semenyshyn Dariya
Publication year - 2011
Publication title -
zeitschrift für anorganische und allgemeine chemie
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.354
H-Index - 66
eISSN - 1521-3749
pISSN - 0044-2313
DOI - 10.1002/zaac.201100066
Subject(s) - tetragonal crystal system , tungsten , crystallography , raman spectroscopy , dimer , ion , chemistry , coordination sphere , atom (system on chip) , crystal structure , point reflection , scheelite , coordination number , diffraction , molecule , physics , optics , condensed matter physics , organic chemistry , computer science , embedded system
The crystal structure of distrontium octacyanotungstate decahydrate, Sr 2 [W(CN) 8 ] · 10H 2 O, was solved using X‐ray single crystal diffraction. The tungsten atom lies on a two fold axis. Eight cyanide anions create tetragonal antiprismatic coordination sphere of tungsten atom. The two edge‐sharing tetragonal antiprisms of [Sr(NC) 3 (OH 2 ) 5 ], create a dimer, [Sr 2 (CN) 6 (H 2 O) 6 (μ‐H 2 O) 2 ], which lies on the inversion center. One symmetry independent water molecule is located in a void of 40 Å 3 . Vibrational (FT‐IR and FT‐Raman spectroscopic) behavior of main structural units is discussed. It was spectroscopically confirmed that the geometry of [W(CN) 8 ] 4– anion is slightly distorted from that corresponding to “free” anion. The number of observed bands is significantly lower than that expected for C 2 point group.
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