5-Methyl-4-(5-methyl-3-oxo-2-phenyl-2,3-di-hydro-1 H-pyrazol-4-yl)-2-phenyl-1 H-pyrazol-3(2 H)-one

Gregory L Powell; Brad A Rix

doi:10.1107/S2414314620001212

5-Methyl-4-(5-methyl-3-oxo-2-phenyl-2,3-di-hydro-1 H-pyrazol-4-yl)-2-phenyl-1 H-pyrazol-3(2 H)-one

IUCrdata. 2020 Feb 11;5(Pt 2):x200121. doi: 10.1107/S2414314620001212. eCollection 2020 Feb.

Authors

Gregory L Powell¹, Brad A Rix¹

Affiliation

¹ Department of Chemistry & Biochemistry, Abilene Christian University, Abilene, Texas 79699-8132, USA.

Abstract

The title compound, C₂₀H₁₈N₄O₂, known as bis-pyrazolone, was crystallized from dimethyl sulfoxide. The structure has ortho-rhom-bic (Pbca) symmetry at 150 K, and displays both intra- and inter-molecular hydrogen bonding through C-H⋯O and N-H⋯O contacts, respectively. None of the phenyl and pyrazolone rings in the mol-ecule are coplanar. The dihedral angle between the pyrazolone rings is 66.18 (5)°.

Keywords: crystal structure; hydrogen bonding; pyrazolone rings.

Grants and funding

Funding for this research was provided by: The Welch Foundation (grant No. R-0021).