organic compounds
The molecules of ethyl 4-(5-amino-3-methyl-1H-pyrazol-1-yl)benzoate, C13H15N3O2, are linked by two independent N—HO hydrogen bonds into a chain of edge-fused and alternating R42(8) and R22(20) rings. A combination of N—HN and N—HO hydrogen bonds links the molecules of methyl 4-(5-amino-3-tert-butyl-1H-pyrazol-1-yl)benzoate, C15H19N3O2, into sheets of alternating R22(20) and R66(32) rings. In 4-(5-amino-3-methyl-1H-pyrazol-1-yl)benzoic acid monohydrate, C11H11N3O2·H2O, the molecular components are linked into a three-dimensional framework structure by a combination of five independent hydrogen bonds, two of O—HN type and one each of O—HO, N—HO and N—HN types.
organic compounds
Molecules of methyl 4-[(5-methyl-1H-pyrazol-3-yl)amino]-3-nitrobenzoate, C12H12N4O4, (I), exhibit a polarized (charge-separated) structure in the nitroaniline portion. The molecules are linked into chains of edge-fused R22(16) and R22(22) rings by a combination of N-HO(carbonyl) and C-HO(nitro) hydrogen bonds. Methyl 1-(5-methyl-1H-pyrazol-3-yl)-1H-benzimidazole-5-carboxylate, C13H12N4O2, (II), which is readily formed from (I) by reduction followed by ring formation, crystallizes with Z' = 2 in the space group P. Each of the two independent molecular types is linked into sheets of R44(28) rings by a combination of N-HN and C-HO(carbonyl) hydrogen bonds.
organic compounds
In methyl 4-(5-amino-3-phenyl-1H-pyrazol-1-yl)-3-nitrobenzoate, C17H14N4O4, the molecules are linked into complex sheets by a combination of N-HN, N-HO and C-HO hydrogen bonds. In the isomeric methyl 3-nitro-4-[(5-phenyl-1H-pyrazol-3-yl)amino]benzoate, molecules exhibit a polarized molecular-electronic structure and are linked into chains of edge-fused rings by a combination of N-HO and C-HO hydrogen bonds.