Three metal complexes derived from 3-methyl-1H-pyrazole-4-carboxylic acid: synthesis, crystal structures, luminescence and electrocatalytic properties

[Cd(HMPCA)₂(H₂O)₄] (1), [Co(H₂MPCA)₂(DMF)₂(H₂O)₂]Cl₂(2), and [Cd₃Cl₂(HMPCA)₄(H₂O)₂]·2H₂O (3) have been synthesized. As a bifunctional catalyst, complex2exhibited excellent catalytic activity for OER and certain catalytic activity for ORR.