Syntheses, crystal structures, and spectral properties of Mn(II) and Co(II) complexes with 3-(p-chlorophenyl)- 4-(p-methylphenyl)-5-(2-pyridyl)-1,2,4-triazole

Abstract

Two new complexes, trans-[MnL₂(NCS)₂] (1) and trans-[CoL₂(H₂O)(EtOH)](ClO₄)₂ · H₂O (2) with asymmetrical triaryltriazole ligands [L = 3-(p-chlorophenyl)-4-(p-methylphenyl)-5-(2-pyridyl)-1,2,4-triazole], have been synthesized and characterized by elemental analysis, FT-IR, ESI-MS, and single-crystal X-ray diffraction. In the complexes each L adopts a chelating bidentate mode via the nitrogen of pyridyl and triazole. Both complexes have a similar distorted octahedral core with two NCS⁻ ions in the trans position in 1, while one H₂O and one EtOH are present in the axial sites in 2.

Keywords:

• Syntheses
• Triazole
• Crystal structures
• Manganese(II) complex
• Cobalt(II) complex

Acknowledgments

This work was funded by the National Nature Science Foundation of China (Nos. 20771059, 20771050 and 20971068) and the Natural Science Foundation of Jiangsu Province (BK2008371).