Abstract
Reaction of 1,4-dimethylpyridinium chlorosulphite with anhydrous copper(II) chloride in an atmosphere of dry nitrogen yields an ionic complex containing discrete [CuCl4]2− anions and 1,4-dimethylpyridinium cations. Electronic (solid and in solution), far infrared and1H NMR spectral data predict a distortedT d structure which has been confirmed by X-ray crystallography. The crystal structure was solved by the heavy-atom method and refined by full-matrix least squares toR=0.059 for 1685 observed reflections. The [CuCl4]2− anions exhibit twofold symmetry and there are no unusual interactions with the cations. Bond lengths and angles place it in the select class of complexes with the least flattenedT d structure.
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Narula, S.P., Kaur, S., Sharma, S.K. et al. Molecular structure and spectra of bis (1,4-dimethylpyridinium)-tetrachlorocuprate(II). Journal of Crystallographic and Spectroscopic Research 22, 139–143 (1992). https://doi.org/10.1007/BF01186248
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DOI: https://doi.org/10.1007/BF01186248