A salt of Reinecke acid; the complex anion present in this.
The formula of the anion is [Cr(NCS)4(NH3)2]−..
Origin
1920s; earliest use found in British Chemical Abstracts. From the name of Albert Reinecke + -ate, after German Reineckat (J. KapfhammerDie freien Aminogruppen im Eiweiss (diss., Univ. of Leipzig) 39).