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Preparation and Characterization of Two Brønsted Acid Ionic Liquids

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Abstract

Two Brønsted acid task specific ionic liquids based on the benizimidazolium cation (1-ethylbenzimidazolium tetrafluoroborate {[H-eBim]BF4 (1)} and 1-propylbenzimidazolium tetrafluoroborate {[H-pBim]BF4 (2)}) were synthesized and characterized. The crystal of 1 is in orthorhombic system with space group Pnma, and the unit cell parameters as follows: a = 9.9308(16), b = 6.8813(11), c = 15.345(3) Å, V = 1048.6(3) Å3, Z = 4, Dc = 1.482 g/cm3. Structure 2 crystallizes in the monoclinic space group P21/c, with unit cell a = 4.9688(14), b = 13.684(4), c = 17.295(5) Å, β = 92.090(6)°, V = 1175.2(6) Å3, Z = 4, Dc = 1.402 g/cm3. These molecules are stabilized in solid state by various intra and intermolecular hydrogen bonding interactions to give polymeric structures.

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Two Brønsted acid task specific ionic liquids based on the benizimidazolium cation were synthesized and characterized.

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Acknowledgments

This project was supported by the Natural Science Foundation of Shaanxi Province (No.03B19), China.

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Authors and Affiliations

  1. Key Laboratory of Synthetic and Natural Functional Molecule Chemistry (Ministry of Education), College of Chemistry & Materials Science, Northwest University, Xi’an, 710069, China

    Shuanhu Chen, Mingtian Wang, Fei Wang, Fenrong Yang, Suqing Shi & Nani Wang

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  1. Shuanhu Chen
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  2. Mingtian Wang
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  3. Fei Wang
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  4. Fenrong Yang
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  5. Suqing Shi
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Correspondence to Shuanhu Chen.

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Chen, S., Wang, M., Wang, F. et al. Preparation and Characterization of Two Brønsted Acid Ionic Liquids. J Chem Crystallogr 41, 1027–1031 (2011). https://doi.org/10.1007/s10870-011-0038-2

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