Crystal Structure of a New Ammonium Potassium Selenomolybdate Compound K3.31(NH4)0.69[Se2Mo5O21]·2H2O

Autor:	Meriem Ayed, Amor Haddad, Ichraf Nagazi, Brahim Ayed
Rok vydání:	2012
Předmět:	chemistry.chemical_classification Infrared spectroscopy General Chemistry Crystal structure Condensed Matter Physics Ring (chemistry) Biochemistry Crystallography chemistry Octahedron X-ray crystallography Polyoxometalate General Materials Science Inorganic compound Monoclinic crystal system
Zdroj:	Journal of Cluster Science. 23:1133-1142
ISSN:	1572-8862 1040-7278
DOI:	10.1007/s10876-012-0508-5
Popis:	An inorganic compound formulated as K3.31(NH4)0.69[Se2Mo5O21]·2H2O has been synthesized by conventional solution method and characterized by scanning electron microscopy, IR, UV-Vis spectroscopies behaviors. The structure of the title compound has been determined from a single-crystal X-ray diffraction. It crystallizes in the monoclinic space group P21/n, with a = 9.9371(2) A, b = 23.3545(2) A, c = 10.5179(2) A, β = 114.12(3)°, V = 2227.7(5) A3 and Z = 4. It was revealed that the Strandberg-type polyoxoselenomolybdate cluster can be considered as a ring formed by five distorted edge- and corner-sharing MoO6 octahedra, capped on both poles by a selenate pyramids sharing three vertices with the ring molybdenum centers. The Strandberg clusters are connected with ammonium ions and water molecules through hydrogen-bonding interactions which ensure the cohesion of the structure into a three-dimensional network.
Databáze:	OpenAIRE
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