68958-89-4 Bis(ethane-1,2-diamine-N,N')nickel(2+) bis(bis(cyano-C)aurate(1-)) EINECS 273-379-5 Nickel gold ethylenediamine cyanide Nickel(2+), bis(1,2-ethanediamine-kappaN,kappaN')-, bis(bis(cyano-kappaC)aurate(1-))