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Synthesis and electrocatalytic properties of a cobalt(II) complex supported by N,N-dimethylethylenediamino-N,N-bis(2-tert-butyl-4-ethylphenol)

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Abstract

The reaction of N,N-dimethylethylenediamino-N,N-bis(2-tert-butyl-4-ethylphenol) (H2L′) with CoBr2 gives a Co(II) complex [CoL′(NCMe)] 1, whose structure has been determined by X-ray diffraction. Complex 1 can electrocatalyze hydrogen evolution from both acetic acid, with a turnover frequency (TOF) of 43 mol of H2 per mole of catalyst per hour under −1.30 V versus Ag/AgNO3 (in CH3CN), and from buffer (pH 7.0) with a TOF of 851.1 mol of H2 per mole of catalyst per hour under −1.45 V versus Ag/AgCl. The electronic properties of the ligands are found to play a vital role in determining the catalytic activity.

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Acknowledgments

This work was supported by (1) the National Science Foundation of China (Nos. 20971045, 21271073) and (2) the Student Research Program (SRP) of South China University of Technology (No. B15-B7050170).

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Authors and Affiliations

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

    Yun-Xiao Zhang, Chen-Neng Lin, Jing Liu & Shu-Zhong Zhan

  2. College of Chinese Language and Culture of Jinan University, Guangzhou, 510610, China

    Xiao-Hua Xie

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  1. Yun-Xiao Zhang
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  2. Chen-Neng Lin
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Correspondence to Shu-Zhong Zhan.

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Zhang, YX., Lin, CN., Liu, J. et al. Synthesis and electrocatalytic properties of a cobalt(II) complex supported by N,N-dimethylethylenediamino-N,N-bis(2-tert-butyl-4-ethylphenol). Transit Met Chem 41, 623–627 (2016). https://doi.org/10.1007/s11243-016-0061-4

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  • DOI: https://doi.org/10.1007/s11243-016-0061-4

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