Structural, vibrational and DSC investigations of the tetraethylammonium hydrogenselenate crystal |
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Authors: | J Baran M
led M Drozd A Pietraszko A Haznar H Ratajczak |
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Institution: | J. Baran, M.
led
, M. Drozd, A. Pietraszko, A. Haznar,H. Ratajczak |
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Abstract: | The X-ray structure of tetraethylammonium hydrogenselenate, N(C2H5)4]HSeO4, was determined at room temperature. The crystal belongs to the P
space group of triclinic system, Z=2, a=8.290(2), b=9.073(2), c=9.517(2) Å, =76.75(3), β=74.31(3) and γ=63.92(3)°. The hydrogenselenate anions are joined into cyclic dimers by two identical (equivalent by Ci) strong hydrogen bonds O(2)–H(02) O(1a); the O(2) O(1a) distance equals 2.611(5) Å. Powder IR and Raman spectra are discussed with respect to the crystal structure. The DSC reveals two phase transitions at 328 and 358 K. |
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Keywords: | [N(C2H5)4]HSeO4 X-ray structure IR Raman Hydrogen bonds Phase transitions |
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