Rational synthesis and X-ray structural study of manganese–pyridine–alcohol derivatives

Abstract

Systematic syntheses of manganese derivatives with 2-pyridineethanol, 2-pyridinemethanol and 2,6-pyridinedimethanol as chelating ligands have been undertaken to produce [trans-Mn(C₅H₄N-2-CH₂CH₂OH)₂Cl₂] (1), [cis-Mn₂(μ-Cl)₂(Cl)₂(C₅H₄N-2-CH₂CH₂OH)₂(OH₂)₂] (2), [cis-Mn₂(μ-Cl)₂(C₅H₄N-2-CH₂OH)₄]Cl₂ (3) and [MnCl{η₃-C₅H₃N-2,6-(CH₂OH)₂}{η₂-(C₅H₃N-2,6-(CH₂OH)₂)}]Cl (4). The complexes were characterized by single-crystal X-ray diffraction. The oxidation state of the manganese ions in these complexes is 2+. Magnetic data are measured down to 2 K; in dimer complexes (2 and 3) a significant antiferromagnetic interaction is observed between two manganese ions.

Keywords:

• 2-Pyridineethanol
• 2,6-Pyridinedimethanol
• X-ray analysis
• Antiferromagnetic interaction

Acknowledgements

This research was funded by Grants-in-Aid for Scientific Research on Priority Area (No. 12023221 “Metal-assembled Complexes”) and by Grants-in-Aid for Scientific Research (No. 14540514) from the Ministry of Education, Science, Sports and Culture, Japan.