Hydrogen-bonded chains in 3-tert-butyl-5-[(4-methoxy­benz­yl)amino]-1-phenyl-1H-pyrazole and tetra­molecular hydrogen-bonded aggregates in 5-[(benzotriazol-1-ylmeth­yl)(4-methoxy­benz­yl)amino]-3-tert-butyl-1-phenyl-1H-pyrazole

The mol­ecules of 3-tert-butyl-5-[(4-methoxy­benz­yl)amino]-1-phenyl-1H-pyrazole, C₂₁H₂₅N₃O, are linked into simple C(9) chains by a single C—H...N hydrogen bond. 5-[(Benzotriazol-1-ylmeth­yl)(4-methoxy­benz­yl)amino]-3-tert-butyl-1-phenyl-1H-pyrazole, C₂₈H₃₀N₆O, crystallizes with Z′ = 2 in the space group P2₁/c. The mol­ecules are weakly linked into centrosymmetric tetra­molecular aggregates by a combination of C—H...N and C—H...O hydrogen bonds.

1-(6-Amino-1,3-benzodioxol-5-yl)-3-(4-pyrid­yl)prop-2-en-1-one crystallizes with Z' = 2: hydrogen-bonded supra­molecular substructures in one and two dimensions, each containing only one type of mol­ecule

The title compound, C₁₅H₁₂N₂O₃, crystallizes with Z' = 2 in the space group P and the intra­molecular dimensions show evidence for a polarized mol­ecular-electronic structure. Each of the two independent types of mol­ecule forms its own hydrogen-bonded supra­molecular substructure, and these are entirely different from one another: one type of mol­ecule forms a chain of edge-fused rings, while the other type forms sheets.