Investigations on the Spin States of Two Mononuclear Iron (II) Complexes Based on N-Donor Tridentate Schiff Base Ligands Derived from Pyridine-2, 6 …

Y Bayeh, N Suryadevara, S Schlittenhardt, R Gyepes… - Inorganics, 2022 - mdpi.com
Y Bayeh, N Suryadevara, S Schlittenhardt, R Gyepes, A Sergawie, P Hrobárik, W Linert
Inorganics, 2022mdpi.com
Iron (II)-Schiff base complexes are a well-studied class of spin-crossover (SCO) active
species due to their ability to interconvert between a paramagnetic high spin-state (HS, S= 2,
5T2) and a diamagnetic low spin-state (LS, S= 0, 1A1) by external stimuli under an
appropriate ligand field. We have synthesized two mononuclear FeII complexes, viz.,[Fe (L1)
2](ClO4) 2. CH3OH (1) and [Fe (L2) 2](ClO4) 2.2 CH3CN (2), from two N6–coordinating
tridentate Schiff bases derived from 2, 6-bis [(benzylimino) methyl] pyridine. The complexes …
Iron(II)-Schiff base complexes are a well-studied class of spin-crossover (SCO) active species due to their ability to interconvert between a paramagnetic high spin-state (HS, S = 2, 5T2) and a diamagnetic low spin-state (LS, S = 0, 1A1) by external stimuli under an appropriate ligand field. We have synthesized two mononuclear FeII complexes, viz., [Fe(L1)2](ClO4)2.CH3OH (1) and [Fe(L2)2](ClO4)2.2CH3CN (2), from two N6–coordinating tridentate Schiff bases derived from 2,6-bis[(benzylimino)methyl]pyridine. The complexes have been characterized by elemental analysis, electrospray ionization–mass spectrometry (ESI-MS), Fourier-transform infrared spectroscopy (FTIR), solution state nuclear magnetic resonance spectroscopy, 1H and 13C NMR (both theoretically and experimentally), single-crystal diffraction and magnetic susceptibility studies. The structural, spectroscopic and magnetic investigations revealed that 1 and 2 are with Fe–N6 distorted octahedral coordination geometry and remain locked in LS state throughout the measured temperature range from 5–350 K.
MDPI
以上显示的是最相近的搜索结果。 查看全部搜索结果