Eanes, MehtapÖnen, BanuMcMillen, Colin D.2015-01-082015-01-082015Emirdağ Eanes, M., Önen, B., & McMillen, C. D. (2015). Hydrothermal synthesis and characterization of one dimensional chain structures of monolacunary Keggin polyoxoanions substituted with copper. Inorganica Chimica Acta, Accepted Manuscript. doi:10.1016/j.ica.2014.12.0180020-16931873-3255https://hdl.handle.net/11147/4257http://dx.doi.org/10.1016/j.ica.2014.12.018Two novel polymeric polyoxometallates constructed from transition metal substituted heteropolytungstates, [(4,4’bpyH2)2(4,4’bpyH)][PCuW11O39]·H2O (1), and [(4,4’bpyH2)(pyH)3][PCuW11O39]·2H2O (2), (4,4’bpy = 4,4’bipyridine, py = pyridine) have been synthesized under hydrothermal conditions and characterized by IR, TGA, single crystal X-ray diffraction and magnetic measurements. The product formation showed a high sensitivity toward experimental factors including pH and stirring. Compounds 1 crystallizes in the monoclinic space group P2(1)/n with a = 13.503(3) Å, b = 26.726(5) Å, c = 15.168(3) Å, = 99.61(3)° and Z=4. The second compound also crystallizes in space group P2(1)/n, but with a = 13.519(3) Å, b = 20.431(4) Å, c =18.655(4) Å, = 96.52(3)° and Z=4. Compound 1 exhibits a zigzag chain structure, while compound 2 exhibits a straight chain structure. Compound 2 is the first example of a polyoxometallate containing 1D chains of transitionmetal- substituted heteropolytungstate designed with two significantly different organic units as the countercations. The Cu2+ ions in 1 exhibit paramagnetic behavior.eninfo:eu-repo/semantics/openAccessHydrothermalKegginPolyoxoanionHybridPyridineArticle2-s2.0-8492237897410.1016/j.ica.2014.12.01810.1016/j.ica.2014.12.018