Synthesis,crystal structures,and magnetic properties of three new iron(II) complexes with pyrrolyl-substituted triaryltriazoles |
| |
| Authors: | Bin Li Yong-Fei Zhou Shi-Pei Zhang Tao Qin Xuan Shen Yan Xu |
| |
| Institution: | State Key Laboratory of Materials-Oriented Chemical Engineering, College of Chemical Engineering, Nanjing Tech University, Nanjing, PR China |
| |
| Abstract: | Three pyrrolyl-substituted triaryltriazoles, 3-(N-methyl-2-pyrrolyl)-4-(p-R-phenyl)-5-(2-pyridyl)-1,2,4-triazole (L1: R = MeO; L2: R = Cl; L3: R = Br), and their mononuclear iron(II) complexes, trans-Fe(L1–3)2(NCS)2]?2MeOH (1: L1; 2: L2; 3: L3), have been synthesized and characterized by elemental analysis, FT-IR, ESI-MS, and single-crystal X-ray crystallography. Crystallographic studies revealed that 1–3 are isomorphous and crystallize in the triclinic space group P-1. All the complexes have a similar octahedral FeN6] core with two trans-NCS? ions. Each ligand adopts a chelating bidentate coordination mode via the pyridyl N and one N of the triazole. Intermolecular O–H?O hydrogen bonding and C–H?π interactions link the molecules of 1–3 to form a 1-D chain or 2-D framework. Variable-temperature magnetic susceptibility measurements indicated that all the complexes remained in a high-spin state from 1.8 to 300 K and had a weak antiferromagnetic interaction. |
| |
| Keywords: | Synthesis triaryltriazole crystal structure iron(II) complex magnetism |
|
|
