Paramagnetic Molecular Semiconductors Combining Anisotropic Magnetic Ions with TCNQ Radical Anions
Year: 2021
Type: article
Abstract: We report the synthesis, magnetic properties, and transport properties of paramagnetic metal complexes, [Co(DMF) 4 (TCNQ) 2 ](TCNQ) 2 ( 1 ), [La(DMF) 8 (TCNQ)](TCNQ) 5 ( 2 ), and [Nd(DMF) 7 (TCNQ)](TCNQ) 5 ( 3 ) (DMF = N, N -dimethylformamide, TCNQ = 7,7,8,8-tetracyanoquinodimethane). All three compounds contain fractionally charged TCNQ δ− anions (0 < δ < 1) and mononuclear complex cations in which the coordination environment of a metal center includes several DMF molecules and one or two terminally coordinated TCNQ δ− anions. The coordinated TCNQ δ− anions participate in π–π stacking interactions with noncoordinated TCNQ δ− anions, forming columnar substructures that provide efficient charge-transporting pathways. As a result, temperature-dependent conductivity measurements demonstrate that all three compounds exhibit semiconducting behavior.
Source: Inorganic Chemistry
Language: English
Field: Materials Science
Domain: Physical Sciences
Open Access status: green
Awards: G1052395768, G3192187779, G6133026032, MRI: Acquisition of a Dual-Source Single-Crystal X-ray Diffractometer, Charge-Spin Conversions in Helical Metals and Chiral Materials, Spin-State Switching and Conductivity in Metal Complexes with Non-Innocent Ligands, NEW: SISGR - HIGH MAGNETIC FIELDS AS A PROBE TO UNVEIL THE PHYSICAL PROPERTIES OF THE NEWLY DISCOVERED FE OXYPNICTIDE SUPERCONDUCTORS AND RELATED COM
OpenAlex ID: W3177400902