Acta Cryst. (2013). E69, m70-m71
[ doi:10.1107/S1600536812051185 ]
Abstract: In the title compound, [Co(C8H5N5O3)(C12H8N2)(H2O)]·3H2O, a tridentate 2-amino-7-methyl-4-oxidopteridine-6-carboxylate ligand, a bidentate ancillary 1,10-phenanthroline (phen) ligand and a water molecule complete a distorted octahedral geometry around the CoII atom. The pterin ligand forms two chelate rings. The phen and pterin ring systems are nearly perpendicular [dihedral angle = 85.15 (8)°]. N-HO, O-HN and O-HO hydrogen bonds link the complex molecules and lattice water molecules into a layer parallel to (001). - stacking contacts (involving phen-phen and pteridine-pteridine) are also observed [centroid-centroid distances = 3.670 (2), 3.547 (2), 3.698 (2) and 3.349 (2) Å].
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