Synthesis, Structure and Supramolecular Properties of a Novel C3 Cryptand with Pyridine Units in the Bridges

Molecules. 2020 Aug 20;25(17):3789. doi: 10.3390/molecules25173789.

Abstract

The high-yield synthesis and the structural investigation of a new cryptand with C3 symmetry, exhibiting 2,4,6-triphenyl-1,3,5-triazine central units and pyridine-based bridges, are reported. The structure of the compound was investigated by single crystal X-ray diffractometry, NMR (nuclear magnetic resonance), HRMS (high resolution mass spectrometry) measurements, and theoretical calculations. The study of supramolecular behavior in solid state revealed the association of cryptand molecules by C-H---π and π---π contacts. Moreover, theoretical calculations indicated the high binding affinity of the cryptand for various organic molecules as guests.

Keywords: 1,3,5-triazine; cryptand; host–guest entities; single crystal X-ray structure; theoretical calculations.

MeSH terms

  • Crystallography, X-Ray
  • Ethers, Cyclic / chemical synthesis*
  • Ethers, Cyclic / chemistry*
  • Magnetic Resonance Spectroscopy
  • Models, Molecular*
  • Molecular Structure
  • Pyridines / chemistry*
  • Schiff Bases / chemical synthesis*
  • Schiff Bases / chemistry*

Substances

  • Ethers, Cyclic
  • Pyridines
  • Schiff Bases
  • cryptand
  • pyridine