Tris(ethyl-enediamine)-cobalt(III) diformatodioxalatoindate(III) dihydrate.

In the cation of the title compound, [Co(C(2)H(8)N(2))(3)][In(C(2)O(4))(2)(CHO(2))(2)]·2H(2)O, the Co-N bond lengths lie in the range 1.960 (5)-1.997 (5) Å. In the anion, the In(III) atom is coordin-ated by four O atoms from two oxalato ligands and two O atoms from two formato ligands in a distorted octa-hedral geometry. Inter-molecular O-H⋯O and N-H⋯O hydrogen bonds form an extensive hydrogen-bonding network, which link the cations, anions and water mol-ecules into three-dimensional structure.