A. Pajunen et S. Pajunen, DIAMMINESILVER(I) BIS(BIURETATO-N-1,N-5)NICKELATE(II) HEXAHYDRATE, Acta crystallographica. Section C, Crystal structure communications, 50, 1994, pp. 1884-1886
The title compound, [Ag(NH3)(2)](2)[Ni(C2H3N3O2)(2)].- 6H(2)O, consist
s of planar [Ni(biu)(2)](2-) anions (biu is the biuret ligand), with s
quare-planar coordination of the Ni atom, and almost linear diamminesi
lver(I) cations. The cations and anions are stacked in a columnar fash
ion along the a axis. The packing is determined by intermolecular hydr
ogen bonds involving the cations, anions and water molecules.