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N-(2,4,6-Trimethyl-phen-yl)formamide.

Marilé Landman¹, Belinda van der Westhuizen, Daniela I Bezuidenhout

¹Department of Chemistry, University of Pretoria, Private Bag X20, Hatfield 0028, South Africa.

Acta Crystallographica. Section E, Structure Reports Online

|April 28, 2011

Summary

An unexpected N-heterocyclic carbene (NHC) product, C(10)H(13)NO, was synthesized. This formamide derivative features a significant dihedral angle and forms infinite chains via hydrogen bonds in its crystal structure.

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Area of Science:

Organometallic Chemistry
Crystallography
Organic Synthesis

Background:

N-heterocyclic carbenes (NHCs) are vital ligands in organometallic chemistry.
The synthesis of novel NHC complexes often leads to unexpected structural motifs.
Understanding crystal packing is crucial for predicting material properties.

Purpose of the Study:

To report the unexpected formation of a C(10)H(13)NO compound during NHC-metal complex synthesis.
To characterize the structure and bonding of the title compound.
To investigate the intermolecular interactions in the solid state.

Main Methods:

Attempted synthesis of a manganese(I)-NHC complex.
Single-crystal X-ray diffraction analysis.

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Analysis of hydrogen bonding and crystal packing.

Main Results:

The title compound, C(10)H(13)NO, was the exclusive product of the attempted synthesis.
The molecular structure exhibits a dihedral angle of 68.06° between the formamide and aryl rings.
Infinite chains are formed along the c axis through N-H⋯O hydrogen bonds.

Conclusions:

The synthetic route unexpectedly yielded a novel formamide derivative instead of the target NHC complex.
The compound's crystal structure reveals specific conformational preferences and intermolecular interactions.
The study highlights the importance of reaction outcome analysis in synthetic chemistry.