Abstract
AbstractA new material both for magnetic coupling and electrocatalytic hydrogen production based on a dinuclear nickel(II) complex, [Ni2L4] 1 has been prepared by the reaction of NiCl2⋅6H2O and 1‐[(2‐methoxy) benzene]‐3‐[2‐pyridine] triazene (HL). Magnetic analysis shows that in the solid state this nickel complex exhibits an antiferromagnetic exchange interaction between nickel(II) ions mediated by triazenido‐bridges (J= −6.8 cm−1). In homogeneous environment, complex 1 shows electrocatalytic activities for hydrogen generation both from acetic acid and neutral buffer with a turnover frequency (TOF) of 101.25 moles of hydrogen per mole of catalyst per hour (mol H2/mol catalyst/h) at an overpotential (OP) of 941.6 mV and a TOF of 998.2 mol H2/mol catalyst/h at an OP of 836.7 mV, respectively.
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