Abstract
A novel inorganic–organic hybrid 1D chain tungstoarsenate (H2en)4H20{Co(Hen) [Co6As3W24O94(H2O)2]}2·15H2O (en = ethylenediamine) (1) has been hydrothermally synthesized and characterized by elemental analysis, IR spectrum and single-crystal X-ray diffraction. 1 contains a double banana-shaped tungstoarsenate anion {Co(Hen)[Co6As3W24O94(H2O)2]}228−, which is established by two banana-shaped {Co(Hen)[Co6As3W24O94(H2O)2]}14− subunits linked together by a W–O–Co bridge. More importantly, adjacent double banana-shaped polyoxoanions {Co(Hen)[Co6As3W24O94(H2O)2]}228− are interconnected by W–O–Co linkers leading to the 1D chain architecture, to our knowledge, which represents the first inorganic–organic hybrid 1D chain constructed from double banana-shaped polyoxoanions. Magnetic measurements indicate that there are the antiferromagnetic interactions within the cobalt centers.
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