Beiträge zur Kristallchemie und zum thermischen Verhalten von wasserfreien Phosphaten. XXXVI [1] Synthese,Kristallstruktur und spektroskopische Charakterisierung von Palladium(II)‐diphosphat Pd2P2O7 |
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Authors: | K Panagiotidis R Glaum J Schmedt auf der Günne W Hoffbauer H Grzel |
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Institution: | K. Panagiotidis,R. Glaum,J. Schmedt auf der Günne,W. Hoffbauer,H. Görzel |
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Abstract: | Synthesis, Crystal Structure and Spectroscopical Characterization of Palladium(II)‐Diphosphate Pd2P2O7 Pd2P2O7 is synthesized by heating (Tmax = 500 °C) stoichiometric amounts of PdO and phosphoric acid. Using chemical vapour transport experiments (850 °C → 750 °C, addition of PdCl2) Pd2P2O7 was crystallized. Pd2P2O7 adopts its own structure type (C 2/c (No. 15), Z = 4, a = 13,151(2) Å, b = 5,172(1) Å, c = 8,139(1) Å, β = 97,52(1)°, 1160 independent reflections, 55 variables, R1 = 0,021 and wR2 = 0,050). Square‐planar PdO4]‐units are linked by diphosphate‐groups generating a 3D framework. Within this framework ribbons may be distinguished. Thus Pd2P2O7 might be described as palladium(II)‐diphosphatopalladate(II)]. The results of various spectroscopic measurements (IR, Raman, UV/VIS, 31P‐MAS‐NMR) are reported and discussed within the context of the crystal structure. |
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Keywords: | Crystal growth Structure elucidation IR/Raman spectra Electronic spectrum NMR solid state |
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