Aqua-(3-formyl-2-oxidobenzoato-κO,O)(1,10-phenanthroline-κN,N')copper(II) dimethyl-formamide solvate.

In the structure of the title complex, [Cu(C(8)H(4)O(4))(C(12)H(8)N(2))(H(2)O)]·C(3)H(7)NO, the Cu(II) ion is penta-coordinated in a distorted square-pyramidal geometry by two O atoms of a 3-formyl-2-oxidobenzoate dianion and two N atoms of a 1,10-phenanthroline ligand occupying the basal plane and a water O atom located at the apical site. The structure displays O-H⋯O hydrogen bonding and inter-molecular π-π stacking inter-actions between 1,10-phenantroline ligands [inter-planar distance of 3.448 (5) Å].

A binuclear cobalt(II) complex of an NO(3)-donor Schiff base derived from 3-carboxyl-salicylaldehyde and 2-nitro-aniline.

In the crystal structure of the centrosymmetric title complex, bis-{µ-3-[(2-nitro-phen-yl)imino-meth-yl]-2-oxidobenzoato}dicobalt(II), [Co(2)(C(14)H(8)N(2)O(5))(2)], in which the ligand is 3-[(2-nitro-phen-yl)imino-meth-yl]-2-oxidobenzoate, a Schiff base synthesized from 2-nitro-aniline with 3-carboxyl-salicyl-aldehyde, the two cobalt(II) ions in the mol-ecular unit are bridged by two phenolate O atoms of the ligands. Each metal centre has a distorted square-planar geometry. In the crystal structure, mol-ecules are linked by Co⋯O inter-actions involving the nitro O atoms, forming a two-dimensional network. There are also C-H⋯O and π-π stacking inter-actions [centroid-centroid distances of 3.5004 (2), 3.6671 (2) and 3.6677 (2) Å] between adjacent benzene rings of the two-dimensional networks, leading to the formation of a three-dimensional framework.