X-ray Structural Analysis of Tetramethylammonium Fluorochromate(VI). A Link between Reactivity and the Extent of Symmetry |
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| Authors: | Shahriare Ghammamy Samaneh Dastpeyman Seyed A Seyed Sadjadi |
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| Institution: | (1) Department of Chemistry, Faculty of Science, Imam Khomeini International University, Ghazvin, Iran;(2) Faculty of Chemistry, Iran University of Science and Technology, Tehran, Iran |
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| Abstract: | The crystal and molecular structure of tetramethylammonium fluorochromate(VI), (CH3)4NCrO3F] has been determined at 130(2) K by X-ray diffraction. X-ray data clearly demonstrate inequality between the Cr–O and the
Cr–F bonds that is responsible for the higher reactivity of this compound over similar oxidizing agents in terms of the amount
of oxidant and solvent required, short reaction times and high yields. The reason for this inequality is due to the CH· ·
·F hydrogen bond that forms between the methyl hydrogen of the cation and the fluoride atom of the anion. The IR spectrum
and hydrogen bonding of this compound is similar to the tetramethylammonium perchlorate salt and shows the existence of hydrogen
bonding. |
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