Hydrothermal Synthesis of a New Vanadium Tellurate(VI) with a Novel Chain Structure: (NH4)4{(VO2)2[Te2O8(OH)2]}·2H2O |
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| Authors: | Hyejin Kim Yoonsuk Cho Hoseop Yun Junghwan Do Prof |
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| Institution: | 1. Seoul/Republic of Korea, Konkuk University, Department of Chemistry;2. Suwon/Republic of Korea, Ajou University, Department of Chemistry;3. Seoul/Republic of Korea, Konkuk University, Department of ChemistryDepartment of Chemistry, Konkuk University, Seoul 143 701/Republic of Korea |
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| Abstract: | A new ammonium vanadium tellurate, (NH4)4{(VO2)2Te2O8(OH)2]}·2H2O ( 1 ) was hydrothermally synthesized and characterized by elemental analyses, IR spectrum, TG analysis, and single crystal X–ray diffraction. Compound 1 crystallizes in the monoclinic system, space group P21/n, a = 7.3843(15) Å, b = 17.111(3) Å, c = 7.3916(15) Å, β = 118.88(3)°, V = 817.9(3) Å3, Z = 2, R1 (I>2σ(I)) = 0.0235, wR2 (all data) = 0.0462. The structure of 1 consists of infinite anionic chains, {(VO2)2Te2O8(OH)2]}4? which contain octahedral VO6 and TeO5OH units. Each octahedral VO6 and TeO5OH unit is connected by sharing an edge to form V2O10 and Te2O8(OH)2 binuclear units. The V2O10 and Te2O8(OH)2 binuclear units are alternatively connected to one another, creating complete infinite {(VO2)2Te2O8(OH)2]}4? chains along the c direction. The anionic chains are separated by ammonium cations and water molecules that link the chains through a network of hydrogen bonds. In addition, the structure contains an extended network of O–H·····O hydrogen bonds between the chains. |
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| Keywords: | Vanadium Tellurates Hydrothermal reaction Chain structure |
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