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Protocols for Testing the Toxicity of Novel Insecticidal Chemistries to Mosquitoes
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Amitraz.

Sangjin Lee1, Tae Ho Kim, Yong Woon Shin

  • 1Department of Chemistry and Research Institute of Natural Sciences, Gyeongsang National University, Jinju 660-701, Republic of Korea.

Acta Crystallographica. Section E, Structure Reports Online
|October 11, 2013
PubMed
Summary
This summary is machine-generated.

This study details the crystal structure of a novel formamidine pesticide, N'-(2,4-di-methyl-phen-yl)-N-[N-(2,4-di-methyl-phen-yl)carbox-imido-yl]-N-methyl-methanimidamide. The structure reveals two independent molecules stabilized by hydrogen bonds and pi-pi interactions, forming one-dimensional chains.

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Area of Science:

  • Crystallography
  • Materials Science
  • Organic Chemistry

Background:

  • Formamidine pesticides are crucial in agriculture.
  • Understanding the molecular structure of pesticides is key to their efficacy and safety.
  • Detailed structural analysis provides insights into chemical properties and interactions.

Purpose of the Study:

  • To elucidate the crystal structure of the formamidine pesticide N'-(2,4-di-methyl-phen-yl)-N-[N-(2,4-di-methyl-phen-yl)carbox-imido-yl]-N-methyl-methanimidamide.
  • To analyze the molecular conformation and intermolecular interactions within the crystal lattice.
  • To identify the stabilizing forces contributing to the overall crystal packing.

Main Methods:

  • Single-crystal X-ray diffraction was employed to determine the crystal structure.
  • Analysis of bond lengths, bond angles, and dihedral angles.
  • Identification and characterization of intermolecular interactions, including hydrogen bonds and pi-pi stacking.

Main Results:

  • The asymmetric unit contains two independent, conformationally similar molecules of the title compound (C19H23N3).
  • The dihedral angle between the 2,4-dimethylbenzene rings in each molecule was measured at approximately 41.63° and 42.09°.
  • The crystal structure is stabilized by C-H⋯N hydrogen bonds and weak intermolecular C-H⋯π and π-π interactions, forming 1D chains along the b-axis.

Conclusions:

  • The detailed crystal structure provides a fundamental understanding of this formamidine pesticide's solid-state arrangement.
  • The identified intermolecular interactions are critical for the stability and packing of the pesticide molecules.
  • This structural information can inform future pesticide design and development for enhanced performance.