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Acta Cryst. (2013). E69, m193-m194
[ doi:10.1107/S1600536813005898 ]

(2-Amino-7-methyl-4-oxidopteridine-6-carboxylato-[kappa]3O4,N5,O6)(ethane-1,2-diamine-[kappa]2N,N')(1H-imidazole-[kappa]N3)nickel(II) dihydrate

S. S. Baisya and P. S. Roy

Abstract: In the title complex, [Ni(C8H5N5O3)(C2H8N2)(C3N2H4)]·2H2O, a tridentate 2-amino-7-methyl-4-oxidopteridine-6-carboxylate (pterin) ligand, a bidentate ancillary ethane-1,2-diamine (en) ligand and a monodentate 1H-imidazole (im) ligand complete a distorted octahedral geometry around the NiII atom. The pterin ligand forms two chelate rings. Both the en and im ligands are arranged nearly orthogonally relative to the pterin ligand [dihedral angles between the mean planes of the en and pterin ligands and of the im and pterin ligands are 84.62 (9) and 85.14 (9)°, respectively]. N-H...N, N-H...O, O-H...N and O-H...O hydrogen bonds link the complex molecules and lattice water molecules into a three-dimensional network.

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