The Cu triazenide was tested in CVD with some promise, but further work is needed to fully evaluate it as precursor. 47 Recently, we synthesised a dinuclear Zn triazenide, Zn2(triaz)4, as a potential vapour deposition precursor. Its crystal structure showed two Zn atoms each with a terminal chelating ligand and two ligands bridging the metal centres (Figure ). It was found to be volatile (80 C at 0.5 mbar), thermally stable (decomp. 145 C) and gave a single step volatilisation curve (onset at 125 C) by TGA with ~5% residual mass. To mimic an ALD surface during ZnS film growth, Zn2(traiz)4 was reacted with two and four equivalents of triphenylsilanethiol, in ligand exchange reactions, to give dimeric and monomeric zinc thiolates, respectively (Figure ). The high volatility and reactivity of this Zn triazenide gives it great promise to be used for ALD of ZnS. We are happy to note that the triazenide ligand has been recently explored by other research groups. Caroff and Girolami reported the synthesise of volatile lanthanide 1,3di-tert-butyltriaznides for Nd, Eu and Er metals. The crystal structure showed mononuclear structures with three sets of triazenide ligands around the metal atom and in a chelating binding mode (Figure and). The structures of Nd and Eu triazenides crystallised with a coordinated THF molecule, whilst the Er analogue did not. These compounds were thermally stable (~280 C) and sublimed at reasonable temperatures (90-120 C at ~0.01 Torr). The TGA gave smooth volatilization curves for these compounds without decomposition, except for the loss of bound THF solvent molecules (Figure ).