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A New Polynuclear Copper‐Complex‐Substituted Tungstoarsenate(V)
Author(s) -
Tong Ruizhan,
Liu Bin,
Xue Ganglin,
Hu Huaiming,
Fu Feng,
Wang Jiwu
Publication year - 2010
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.200900509
Subject(s) - copper , chemistry , crystallography , antiferromagnetism , intramolecular force , ligand (biochemistry) , ion , cluster (spacecraft) , crystal structure , infrared spectroscopy , stereochemistry , physics , biochemistry , receptor , organic chemistry , computer science , programming language , condensed matter physics
A new polynuclear copper‐complex‐substituted dimeric tungstoarsenate(V), H 2 [{Cu(2,2′‐bpy)} 8 (H 2 O) 2 (AsW 9 O 34 ) 2 ] · 12H 2 O ( 1 ) (2,2′‐bpy = 2,2′‐bipydine), was synthesized hydrothermally and its structure was determined by single‐crystal X‐ray diffraction. The title compound has Ci symmetry and consists of two trilacunary Keggin anions [α‐AsW 9 O 34 ] 9– supported by eight copper complex cations. The compound was also characterized by IR and fluorescence spectroscopy, TG analysis, and magnetic measurements. The emission spectrum of the compound in solid‐state exhibits a redshift relative to those of Na 8 [ A ‐HAsW 9 O 34 ] · 11H 2 O and the free ligand 2,2′‐bpy. Magnetic measurements of the compound indicate competing ferro‐ and antiferromagnetic intramolecular coupling among the Cu II atoms in the cluster anion.