Preparation,Crystal Structure,Vibrational Spectra,and Thermal Behavior of Tl2H2P2O6 and Tl4P2O6 |
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Authors: | Peng Wu Niels‐Patrick Pook Mimoza Gjikaj |
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Affiliation: | Institut für Anorganische und Analytische Chemie der TU Clausthal, Paul‐Ernst‐Strasse 4, 38678 Clausthal‐Zellerfeld, Germany |
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Abstract: | The new thallium(I) salts, Tl2H2P2O6 ( 1 ) and Tl4P2O6 ( 2 ), were prepared and structurally characterized by single‐crystal X‐ray diffraction. Compound 1 crystallizes in the monoclinic space group P21/c and compound 2 in the orthorhombic space group Pbca. Both structures feature channels occupied by the lone electron pairs of Tl+ cations. Furthermore, those are built up by discrete [H2P2O6]2– for compound 1 and [P2O6]4– units for 2 in staggered conformation for the P2O6 skeleton and the thallium cations. In Tl2H2P2O6 ( 1 ) the hydrogen atoms of the [H2P2O6]2– ion are in a “trans‐trans” conformation. The O ··· H–O hydrogen bonds between the [H2P2O6]2– groups consolidate the structure 1 into a three‐dimensional network. FT‐IR/FIR and FT‐Raman spectra of the crystalline title compounds were recorded and a complete assignment for the P2O64– modes is proposed. The phase purity of 1 was verified by powder diffraction measurements. |
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Keywords: | Hypodiphosphate Crystal structure Powder diffraction Thallium |
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