Synthesis,Crystal Structure and Vibrational Spectra of Barium Cyclotetraphosphate Hydrate Ba2(P4O12)∙3.5H2O |
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Authors: | Henning  A. Höppe Dr.,Karolina Kazmierczak,Michael Daub |
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Affiliation: | Institut für Anorganische und Analytische Chemie, Albert‐Ludwigs‐Universit?t Freiburg, Albertstr. 21, 79104 Freiburg im Breisgau, Germany |
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Abstract: | Barium tetrametaphosphate hydrate Ba2(P4O12)∙3.5H2O was synthesized as a single‐phase crystalline powder starting from an aqueous solution of barium hydroxide and phosphorus pentoxide at 300 K. Ba2(P4O12)∙3.5H2O crystallizes in a new structure type in which the Ba2+ ions form a distorted hexagonal diamond‐like arrangement with the (P4O12)4– anions in the trigonal prismatic voids (Ba2(P4O12)∙3.5H2O, C2/c, Z = 4, a = 777.3(2), b = 1297.6(2), c = 1346.1(3) pm, b = 95.38(2)°, wR2 = 0.071, R1 = 0.018, 1180 reflections, 118 parameters). The vibrational spectra of Ba2(P4O12)∙3.5H2O and its thermal behavior up to 720 K are also reported. |
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Keywords: | Structure elucidation Barium Phosphates Vibrational spectroscopy Thermal analysis |
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