The crystal structure of ammonium di--hydroxo-di[triscarbonato-zirconate(IV)]tetrahydrate Academic Article uri icon


  • The crystal structure of ammonium di--hydroxo-di[triscarbonatozirconate(IV)]tetrahydrate, (NH4)6[Zr(OH)(CO3)3]2. 4H2O, has been determined. The crystals are monoclinic, P21/n, with cell dimensions a = 16.46 0.02 , b = 11.53 0.03 , c = 6.95 0.01 and = 92.0 0.2 . The observed density, 1.87 0.05 g/cm3, corresponding to four molecules per unit cell. The crystals consist of discrete dimeric species in which the metal atoms are bridged by hydroxo groups. Each carbonate ion behaves as a bidentate ligand forming with the hydroxo groups a distorted dodecahedron of oxygen atoms about each zirconium atom. The dimers are held in the crystal through the compensating electrostatic charge of the ammonium ions and a network of hydrogen bonds to the water molecules. 1970.

published proceedings

  • Inorganica Chimica Acta

author list (cited authors)

  • Clearfield, A.

citation count

  • 14

complete list of authors

  • Clearfield, A

publication date

  • January 1970