Crystal Structure of a Supramolecular Complex Formed between 1-bromo-2-iodo-tetrafluoroethane and N,N,N′,N′-tetramethyl-ethylenediamine |
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Authors: | Qichen Huang Zheming Wang Qianli Chu Shizheng Zhu |
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Institution: | (1) College of Chemistry, Peking University, 100871 Beijing, China;(2) Shanghai Institute of Organic Chemistry, Chinese Academy of Sciences, 200032 Shanghai, China |
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Abstract: | X-ray analysis has revealed that N,N,N′,N′-tetramethyl-ethylenediamine 1 form donor–acceptor complex 3 with 1-bromo-2-iodo-tetrafluoroethane 2, in which the N X (X = Br, I) distances are longer than the average covalent bond length between X and N, but are also definitively shorter than the sum of the corresponding van der Waals radii of X and N, thus that indicating weak interactions between the nitrogen and bromine or iodine atoms. In our experimental section, a valuable method for recrystallization and collect X-ray data from crystals that easily exhibit decay and can be cracked is reported. |
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Keywords: | 1-bromo-2-iodo-tetrafluoroethane crystal structure N N N′ N′ -tetramethyl-ethylenediamine supramolecular complex |
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