García-Álvarez AC, Gamboa-Ramírez S, Martínez-Otero D, Orio M, Castillo I. Self-assembled nickel cubanes as oxygen evolution catalysts.
Chem Commun (Camb) 2021;
57:8608-8611. [PMID:
34369500 DOI:
10.1039/d1cc03227e]
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Abstract
Ni4O4 cubanes [(μ3-L1O)NiCl(MeOH)]4 (1) and [(μ3-L2O)NiCl(H2O)]4 (2) (L1OH = 1-H-2-benzimidazolylmethanol, L2OH = 1-methyl-2-benzimidazolylmethanol) self-assemble from commercially available 1-H- and 1-methyl-2-benzimidazolylmethanol and NiCl2·6H2O in high yields under mild conditions. Both complexes were characterised spectroscopically and by X-ray crystallography. The cubanes oxidise water electrocatalytically to dioxygen at neutral pH in aqueous potassium phosphate buffer solutions.
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