“…Ni II (dtc) 2 was synthesized by adding two equivalents of sodium diethyldithiocarbamate trihydrate (Na(dtc)·3H 2 O, Sigma-Aldrich, >99%) to one equivalent of nickel(II) chloride hexahydrate (Alfa Aesar, 98%) in DI water as described previously. − A light-green solid precipitated instantly and was filtered under vacuum and washed with cold distilled water, ethanol, and ether to obtain 96% yield. Characterization of the light-green solid was performed by 1 H NMR (acetonitrile- d 3 , CD 3 CN, Cambridge Isotopes): δ 3.60 (q, −CH 2 −), 1.21 (t, −CH 3 ), UV–visible absorbance spectroscopy: λ max (ε) = 388 nm (5,600 M –1 cm –1 ) and 323 nm (26,700 M –1 cm –1 ), and X-ray crystallography.…”