Two-Coordinate Coinage Metal Complexes as Solar Photosensitizers.

Generating sustainable fuel from sunlight plays an important role in meeting the energy demands of the modern age. Herein, we report two-coordinate carbene-metal-amide (cMa, M = Cu(I) and Au(I)) complexes that can be used as sensitizers to promote the light-driven reduction of water to hydrogen. The cMa complexes studied here absorb visible photons (ε > 10 M cm), maintain long excited-state lifetimes (τ ∼ 0.

Bis[1,2-bis-(4--butyl-phen-yl)ethyl-ene-1,2-di-thiol-ato(1-)]nickel(II) pentane 0.25-solvate.

The title compound, [Ni(CHS)], , is a square-planar -symmetric compound that occurs on a general position in non-centrosymmetric tetra-gonal 422 (No. 92) with ¼ eq of -pentane (CH) as co-crystallite. Intra-ligand bond lengths show the di-thiol-ene ligands to be in their half-oxidized radical monoanionic form.