Low temperature far IR spectra of (CH34)N NiCl3, (CH3)4N NiBr3 and (CD3)4N NiBr3 |
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| Authors: | Rolf Willestofte Berg Steen Skaarup |
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| Affiliation: | Chemistry Department A, The Technical University of Denmark, Building 207, DK-2800 Lyngby, Denmark |
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| Abstract: | The known phase transition in (CH3)4N NiCl3, at 171 K, has been characterised by far IR spectroscopy. The transition is explained as due to a formation of weak labile C-H,…, Cl hydrogen bonds at low temperatures, restricting the “free” internal rotations of the methyl groups and perhaps at the same time ordering the orientations of the tetramethylammonium ions. No similar transition in (CH3)4N NiBr3 was found. |
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