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Synthesis, characterization and electrocatalytic performance of a cobalt(II) complex of N-phenylpyridin-2-ylmethanimine

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Abstract

N-phenylpyridin-2-ylmethanimine, HL reacts with CoBr2 to afford a water-soluble cobalt(II) complex [CoII(HL)2Br2] 1, whose crystal structure has been determined by X-ray diffraction. Electrochemical studies show that this complex can electrocatalyze hydrogen generation from a neutral buffer with a turnover frequency (TOF) of 875.17 mol of hydrogen per mole of catalyst per hour (mol H2/mol catalyst/h) at an overpotential (OP) of 837.6 mV. Compared with the cobalt complex 1, the previously described nickel(II) complex [Ni(HL)2Cl2] (970.45 mol H2/mol catalyst/h at an OP of 837.6 mV) exhibits more efficient activity for hydrogen evolution.

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Acknowledgements

This work was supported by the National Science Foundation of China (Nos. 20971045 and 21271073).

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Authors and Affiliations

  1. College of Chemistry and Chemical Engineering, South China University of Technology, Guangzhou, 510640, China

    Dan Xue, Su-Ping Luo, Ling-Fen Yang & Shu-Zhong Zhan

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  1. Dan Xue
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  2. Su-Ping Luo
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  3. Ling-Fen Yang
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  4. Shu-Zhong Zhan
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Correspondence to Shu-Zhong Zhan.

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Xue, D., Luo, SP., Yang, LF. et al. Synthesis, characterization and electrocatalytic performance of a cobalt(II) complex of N-phenylpyridin-2-ylmethanimine. Transit Met Chem 42, 615–621 (2017). https://doi.org/10.1007/s11243-017-0166-4

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  • DOI: https://doi.org/10.1007/s11243-017-0166-4

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