Also Called: Nickelate(3-), [N,N-bis(phosphonomethyl)glycinato(5-)]-, triammonium, (T-4)-;Nickelate(3-), [N,N-bis[(phosphono-.kappa.O)methyl]glycinato(5-)-.kappa.N,.kappa.O]-, ammonium (1:3), (T-4)-;Nickelate(3-), [N,N-bis(phosphonomethyl)glycinato(5-)]-, triammonium, (ß-4)-;Nickel compounds