Synthesis, characterization and electrocatalytic performance of a cobalt(II) complex of N -phenylpyridin-2-ylmethanimine
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.
Publisher URL: https://link.springer.com/article/10.1007/s11243-017-0166-4
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