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In the title compound, C4H6N4·C3H6O, the pyrimidine-2,4-diamine molecule is nearly planar (r.m.s. deviation = 0.005 Å), with the endocyclic angles covering the range 114.36 (10)–126.31 (10)°. In the crystal, N—H
N and N—HO hydrogen bonds link the molecules into ribbons along [101], and weak C—Hπ interactions consolidate further the crystal packing.
N and N—HO hydrogen bonds link the molecules into ribbons along [101], and weak C—Hπ interactions consolidate further the crystal packing.metal-organic compoundsOpen access
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In the title compound, [Zn(C6H4NO2)2(H2O)2]·0.5C3H7NO, the ZnII ion is coordinated in a distorted octahedral N2O4 environment by two N,O-chelating pyridine-2-carboxylate ligands and two cis water molecules. The chelating pyridine-2-carboxylate ligands create two five-membered Zn/N/C/C/O rings, which form a dihedral angle of 86.4 (2)°. In the crystal, O—HO hydrogen bonds link the complex molecules into a two-dimensional network parallel to (100). The dimethylformamide solvent molecule is disordered about a twofold rotation axis.
O hydrogen bonds link the complex molecules into a two-dimensional network parallel to (100). The dimethylformamide solvent molecule is disordered about a twofold rotation axis.organic compoundsOpen access
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In the title co-crystal, 2C6H5NO·C4H4O4, two crystallographically different hydrogen-bonded trimers are formed, one in which the components occupy general positions, and one generated by an inversion centre. This results in the uncommon situation of Z = 3 for a triclinic crystal. In the formula units, molecules are linked by O—HN hydrogen bonds.
N hydrogen bonds.
