[{"from": "human", "value": "Provide a description of this molecule. [C-1][#N].[C-1][#N].[Zn+2]"}, {"from": "gpt", "value": "The molecule appears as a white powder. Insoluble in water. Toxic by inhalation (dust and the hydrogen cyanide from slight decomposition) and by ingestion. Produces toxic oxides of nitrogen in fires. Used in medicine, in metal plating, and in chemical analysis."}]