Abstract
The title compound, C18H18NOP, was obtained during a search for new P,N-containing ligands with the potential to generate precatalysts with chromium(III) for selective ethyl-ene oligomerization. In the crystal, mutual pairs of N-H⋯O=P hydrogen bonds link two mol-ecules into a dimer with individual mol-ecules related by a twofold rotation axis. The P=O bond length of 1.4740 (15) Å is not elongated although the O atom is involved in hydrogen bonding. The crystal structure is further stabilized by van der Waals inter-actions between the dimers, linking the mol-ecules into a three-dimensional network structure.
Highlights
The title compound, C18H18NOP, was obtained during a search for new P,Ncontaining ligands with the potential to generate precatalysts with chromium(III) for selective ethylene oligomerization
Mixed bi- and tridentate ligands containing phosphorus and nitrogen atoms are highly useful in chromium(III)-catalysed selective ethylene oligomerization (Fliedel et al, 2016)
We present the synthesis and the crystal structure of the title compound, (3,5-dimethyl-1Hpyrrol-2-yl)diphenylphosphine oxide, C18H18NOP, that was obtained by an accidental oxidation reaction
Summary
Mixed bi- and tridentate ligands containing phosphorus and nitrogen atoms are highly useful in chromium(III)-catalysed selective ethylene oligomerization (Fliedel et al, 2016). Several variations of the ligands introduced by chemical modifications can tune the steric and electronic properties of the catalysts, affecting the catalytic behavior in ethylene oligomerization (Agapie, 2011; McGuinness, 2011). In search of new P,N-containing ligands, we obtained the title compound from the reaction of 2,4-dimethylpyrrole and chlorodiphenylphosphine. We present the synthesis and the crystal structure of the title compound, (3,5-dimethyl-1Hpyrrol-2-yl)diphenylphosphine oxide, C18H18NOP, that was obtained by an accidental oxidation reaction
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