Magnetic ordering in TCNQ-based metal–organic frameworks with host–guest interactions

This journal is © the Partner Organisations. Host-guest interactions between the aromatic molecules benzene, toluene, aniline and nitrobenzene and the redox-active TCNQ-based metal-organic framework (MOF), Fe(TCNQ)(4,4′-bpy) (1) (TCNQ = 7,7,8,8-tetracyanoquinodimethane), have been found to modulate spontaneous magnetization behaviours at low temperatures. An analogous MOF, Mn(TCNQ)(4,4′-bpy) (2) with isotropic Mn(ii) ions as well as the two-dimensional compound Fe(TCNQ)(DMF)2·2DMF (3·2DMF), were also prepared as models for studying the effects of single-ion magnetic anisotropy and structural distortion on spin canting. The results indicate guest-dependent long range magnetic ordering occurs at low temperatures, which correlates with the electrostatic and steric effects of the incorporated aromatic guests.

Zhang, X., Saber, M. R., Prosvirin, A. P., Reibenspies, J. H., Sun, L., Ballesteros-Rivas, M., Zhao, H., & Dunbar, K. R.

Magnetic ordering in TCNQ-based metal–organic frameworks with host–guest interactions Academic Article