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

Abstract

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, C 28H30N6O, crystallizes with Z′ = 2 in the space group P21/c. The molecules are weakly linked into centrosym-metric tetramolecular aggregates by a combination of C - H⋯N and C - H⋯O hydrogen bonds. © 2007 International Union of Crystallography.