Abstract
Tungstotellurates of the organic imidazolium and 4-methyl-imidazolium cations have been prepared and characterized by X-ray diffraction and i.r. spectroscopy. The [TeW6O24]6− anion is formed by close packing of oxygen atoms with Te and W atoms in distorted octahedral voids. In both compounds the organic cations are involved in hydrogen bonds, to the [TeW6O24]6− anion in [H2imz]6[TeW6O24] · 2(Himz) (1) and to Te(OH)6 units in [4-H2-methyl-imz]6[TeW6O24] · Te(OH)6 (2). Solution studies of (1) and (2) by 1H-, 183W- and 125Te-n.m.r. have been carried out. Thermogravimetric (t.g.) and calorimetric (d.s.c.) analyses were performed for both compounds.
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Lorenzo-Luis, P.A., Gili, P., Sánchez, A. et al. Tungstotellurates of the imidazolium and 4-methylimidazolium cations. Transition Metal Chemistry 24, 686–692 (1999). https://doi.org/10.1023/A:1006987412453
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DOI: https://doi.org/10.1023/A:1006987412453