An Application Exploiting Aurophilic Bonding and iClick to Produce White Light Emitting Materials.

The paper focuses on exploiting aurophilic bonding to produce white light emitting materials. Inorganic Click (iClick) is employed to link two or four Au(I) metal ions through a triazolate bridge. Depending on the choice of phosphine ligand (PEt or PPh), dinuclear Au-FO or tetranuclear Au-FO complexes can be controllably synthesized (FO = 2-(9,9-dioctylfluoreneyl-)).

Cyanide-bridged iron complexes as biomimetics of tri-iron arrangements in maturases of the H cluster of the di-iron hydrogenase.

Developing from certain catalytic processes required for ancient life forms, the H processing enzymes [NiFe]- and [FeFe]-hydrogenase (Hase) have active sites that are organometallic in composition, possessing carbon monoxide and cyanide as ligands. Simple synthetic analogues of the 2Fe portion of the active site of [FeFe]-Hase have been shown to dock into the empty carrier (maturation) protein, apo-Hyd-F, the bridging ability of a terminal cyanide ligand from a low valent FeFe unit to the iron of a 4Fe4S cluster of Hyd-F, with spectral evidence indicating CN isomerization during the coupling process (Berggren, , , 2013, , 66-70). To probe the requirements for such cyanide couplings, we have prepared and characterized four cyanide-bridged analogues of 3-Fe systems with features related to the organoiron moiety within the loaded HydF protein.