title: (2-Amino-7-methyl-4-oxidopteridine-6-carboxyl-ato-κ(3) O (4),N (5),O (6))(ethane-1,2-diamine-κ(2) N,N')(1H-imidazole-κN (3))nickel(II) dihydrate.
abstract: In the title complex, [Ni(C8H5N5O3)(C2H8N2)(C3N2H4)]·2H2O, a tridentate 2-amino-7-methyl-4-oxidopteridine-6-carboxyl-ate (pterin) ligand, a bidentate ancillary ethane-1,2-diamine (en) ligand and a monodentate 1H-imidazole (im) ligand complete a distorted octa-hedral geometry around the Ni(II) 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 mol-ecules and lattice water mol-ecules into a three-dimensional network.
authors: Department of Chemistry, University of North Bengal, Siliguri 734 013, India.
authors: Siddhartha S
authors: SS
authors: Baisya
authors: Parag S
authors: PS
authors: Roy
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