Two-dimensional metal–organic framework (MOF) sheets were synthesized by incorporation of the molecular metal dithiolene–diamine (MS<
sub>2
sub>N<
sub>2
sub>, M=Co and Ni), metal bis(dithiolene) (MS<
sub>4
sub>), and metal bis(diamine) (MN<
sub>4
sub>) complexes. 2D MOFs were applied as model carbon-rich electrocatalysts for the hy
drogen evolution reaction in water, and these studies provided an in-depth understanding of the catalytic active sites, thus paving the way for the future development of metal complexes in carbon-rich electrode materials for energy generation. More information can be found in the Communication by G. Seifert and X. Feng et al. on
page 2255 ff.