Synthesis and Applications of New Spin Crossover Compounds

• Main Author: Kitazawa, Takafumi (auth)
• Format: Electronic Book Chapter
• Language: English
• Published: MDPI - Multidisciplinary Digital Publishing Institute 2019
• Subjects: n/a; hexadentate ligand; X-ray diffraction; structural disorder; lattice energy; 2-bis(4-pyridyl)ethane; thermal hysteresis; optical conductivity spectrum; spin-state crossover; solvate; single crystal; spin-crossover transition; spin-crossover; cobalt oxide; amorphous; metal dithiolene complexes; qsal ligand; impurity effect; 3-triazole; intermolecular interactions; spin crossover; hydrogen bonding; 1; 2; optical microscopy; supramolecular coordination polymer; paramagnetic ligand; magnetic susceptibility; high spin; [Fe(III)(3-OMesal2-trien)]+; aminoxyl; cobalt(II) ion; mosaicity; Fe(III) coordination complexes; nitroxides; C-H···? interactions; Fe(II); dithiooxalato ligand; dinuclear triple helicate; coordination polymers; magnetization; spiral structure; magnetostructural correlations; charge-transfer phase transition; structure phase transition; magnetic properties; spin polaron; substitution of 3d transition metal ion; iron(II) complexes; X-ray absorption spectroscopy; coordination complexes; crystal engineering; fatigability; soft X-ray induced excited spin state trapping; spin transition; dipyridyl-N-alkylamine ligands; coordination polymer; iron (II); iron mixed-valence complex; chiral propeller structure; spin cross-over (SCO); EPR spectroscopy; Cu(II) complexes; solvent effects; ferromagnetism; SQUID; LIESST effect; low spin (LS); 57Fe Mössbauer spectroscopy; dielectric response; iron(II); hetero metal complex; atropisomerism; switch; Schiff base; counter-anion; DFT calculation; Fe(III) complex; Fe(II) complex; high spin (HS); reaction diffusion; thermochromism; supramolecular isomerism; phase transition; magnetic transition; mononuclear; [Au(dmit)2]?; UV-Vis spectroscopy; phase transitions; ?-? interactions; [Au(dddt)2]?; crystal structure; linear pentadentate ligand; ion-pair crystals
• Online Access: DOAB: download the publication; DOAB: description of the publication

The crystal chemistry of spin crossover (SCO) behavior in coordination compounds can potentially be in association with smart materials-promising materials for applications as components of memory devices, displays, sensors and mechanical devices and, especially, actuators, such as artificial muscles. This Special Issue is devoted to various aspects of SCO and related research, comprising 18 interesting original papers on valuable and important SCO topics. Significant and fundamental scientific attention has been focused on the SCO phenomena in a wide research range of fields of fundamental chemical and physical and related sciences, containing the interdisciplinary regions of chemical and physical sciences related to the SCO phenomena. Coordination materials with bistable systems between the LS and the HS states are usually triggered by external stimuli, such as temperature, light, pressure, guest molecule inclusion, soft X-ray, and nuclear decay. Since the first Hofmann-like spin crossover (SCO) behavior in {Fe(py)2[Ni(CN)4]}n (py = pyridine) was demonstrated, this crystal chemistry motif has been frequently used to design Fe(II) SCO materials to enable determination of the correlations between structural features and magnetic properties.