Bis(propane-1,3-diamine)-disaccharinatonickel(II).

In the title complex, [Ni(C(7)H(4)NO(3)S)(2)(C(3)H(10)N(2))(2)] or [Ni(sac)(2)(pen)(2)] (sac = saccharinate or 1,1,3-trioxo-2,3-dihydro-1λ(6,2)-benzothia-zol-2-ide and pen = propane-1,3-diamine), the Ni(II) ion sits on an inversion center, being coordinated by two N atoms of the sac ligands, which occupy trans positions, and four N atoms of the bidentate pen ligands to define a distorted octa-hedral geometry. The pen ligands chelate the metal ion, forming a six-membered ring which adopts a half-chair conformation, while the sac ligands adopt the most common coordination mode. The crystal packing is stabilized by N-H⋯O hydrogen bonds, which form a one-dimensional network along [010]. It is also supported by an N-H⋯S hydrogen bond between the amine group of the pen ligand and the sulfonyl group of the sac ligand.

2-Amino-4-nitro-phenol-1-(2,4,6-trihy-droxy-phen-yl)ethanone (1/1).

In the title compound, C(6)H(6)N(2)O(3)·C(8)H(8)O(4), the 2-amino-4-nitro-phenol (ANP) and 1-(2,4,6-trihy-droxy-phen-yl)ethanone (THA) mol-ecules are both nearly planar, with r.m.s. deviations of 0.0630 and 0.0313 Å, respectively. The angle between the least-squares planes of THA and ANP is 48.99 (2)°. In THA, an intra-molecular O-H⋯O hydrogen bond generates an S(6) ring motif. In the crystal, N-H⋯O, O-H⋯O and O-H⋯N hydrogen bonds lead to the formation of a three-dimensional network. There are also inter-molecular π-π inter-actions between the benzene rings of ANP-ANP and of THA-THA mol-ecules, with centroid-centroid distances of 3.5313 (14) and 3.8440 (16) Å, respectively. Weak C-O⋯π and N-O⋯π inter-actions also occur.