Magnetism, Conductivity and Spin-Spin Interactions in Layered Hybrid Structure of Anionic Radicals [Ni(dmit)] Alternated by Iron(III) Spin-Crossover Complex [Fe(III)(3-OMe-Saltrien)] and Ferric Moiety Precursors.

In this study, crystals of the hybrid layered structure, combined with Fe(III) Spin-Crossover (SCO) complexes with metal-dithiolate anionic radicals, and the precursors with nitrate and iodine counterions, are obtained and characterized. [Fe(III)(3-OMe-Saltrien)][Ni(dmit)] (), [Fe(III)(3-OMe-Saltrien)]NO·HO (), [Fe(III)(3-OMe-Saltrien)]I () (3-OMe-Saltrien = hexadentate NO Schiff base is the product of the condensation of triethylenetetramine with 3-methoxysalicylaldehyde; Hdmit = 2-thioxo-1,3-dithiole-4,5-dithiol). Bulk SCO transition was not achieved in the range 2.

The First Conducting Spin-Crossover Compound Combining a Mn Cation Complex with Electroactive TCNQ Demonstrating an Abrupt Spin Transition with a Hysteresis of 50 K.

We present herein the synthesis, crystal structure, and electric and magnetic properties of the spin-crossover salt [Mn(5-Cl-sal-N-1,5,8,12)]TCNQ ⋅2 CH CN (I), where 5-Cl-sal-N-1,5,8,12=N,N'-bis(3-(2-oxy-5-chlorobenzylideneamino)propyl)-ethylenediamine, containing distinct conductive and magnetic blocks along with acetonitrile solvent molecules. The Mn complex with a Schiff-base ligand, [Mn(5-Cl-sal-N-1,5,8,12)] , acts as the magnetic unit, and the π-electron acceptor 7,7,8,8-tetracyanoquinodimethane (TCNQ ) is the conducting unit. The title compound (I) exhibits semiconducting behavior with room temperature conductivity σ ≈1×10  ohm  cm and activation energy Δ ≈0.