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Crystal Structure of Pyridinium Periodate

  • Grzegorz Dutkiewicz and Zdzisław Pająk
Published/Copyright: June 2, 2014
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The crystal structure of the room-temperature ferroelectric phase of pyridinium periodate [C6H5NH]+[IO4]- has been determined by X-ray diffraction as orthorhombic, space group Cmc2i with a = 8.347(2), b = 7.270(2), c = 12.732(3) Å and Z = 4. It was refined to R1 =0.0281 wR2 = 0.0762 for 389 absorption-corrected reflections. The structure comprises isolated IO4 tetrahedra linked together by disordered pyridinium cations involved in a network of bifurcated hydrogen bonds. The average I-O distance is found to be 1.75(1) Å.

Received: 1998-7-21
Published Online: 2014-6-2
Published in Print: 1998-11-1

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