Synthesis, structure, and spin crossover above room temperature of a mononuclear and related dinuclear double helicate iron(ii) complexes

2016 ◽  
Vol 45 (43) ◽  
pp. 17132-17140 ◽  
Author(s):  
Hiroaki Hagiwara ◽  
Tomoko Tanaka ◽  
Shiori Hora
Keyword(s):  
Room Temperature ◽  
Spin Crossover ◽  
Structural Relationships

Magneto-structural relationships of mononuclear and dinuclear double helicate spin crossover (SCO) Fe(ii) complexes are reported.

The Flexibility of Long Chain Substituents Influences Spin-Crossover in Isomorphous Lipid Bilayer Crystals

2021 ◽  
Author(s):  
Iurii Galadzhun ◽  
Rafal Kulmaczewski ◽  
Namrah Shahid ◽  
Oscar Cespedes ◽  
Mark J Howard ◽  
...  
Keyword(s):  
Lipid Bilayer ◽  
High Spin ◽  
Room Temperature ◽  
Spin Crossover ◽  
Pyridine Derivatives ◽  
Long Chain

[Fe(bpp)2][BF4]2 (bpp = 2,6-di{pyrazol-1-yl}pyridine) derivatives bearing a bent geometry of hexadec-1-ynyl or hexadecyl substituents pyrazole are isomorphous, and high-spin at room temperature. However, only the latter compound undergoes an abrupt,...

scholarly journals A family of heterobimetallic cubes shows spin‐crossover behaviour near room temperature

2021 ◽  
Author(s):  
Matthias Hardy ◽  
Jacopo Tessarolo ◽  
Julian J. Holstein ◽  
Niklas Struch ◽  
Norbert Wagner ◽  
...  
Keyword(s):  
Room Temperature ◽  
Spin Crossover

scholarly journals Influence of the ultra-slow nucleation and growth dynamics on the room-temperature hysteresis of spin-crossover single crystals

2021 ◽  
pp. 138442
Author(s):  
Volodymyr M. Hiiuk ◽  
Karl Ridier ◽  
Il'ya A. Gural'skiy ◽  
Alexander A. Golub ◽  
Igor O. Fritsky ◽  
...  
Keyword(s):  
Single Crystals ◽  
Room Temperature ◽  
Spin Crossover ◽  
Growth Dynamics ◽  
Nucleation And Growth ◽  
Temperature Hysteresis

scholarly journals Crystal structure of a new lithium iron vanadate

2014 ◽  
Vol 70 (a1) ◽  
pp. C1101-C1101
Author(s):  
Laurent Castro ◽  
Nicolas Penin ◽  
Dany Carlier ◽  
Alain Wattiaux ◽  
Stanislav Pechev ◽  
...  
Keyword(s):  
Crystal Structure ◽  
Room Temperature ◽  
Magnetic Measurements ◽  
Charge Compensation ◽  
Li Ion Batteries ◽  
New Materials ◽  
Single Crystal Diffraction ◽  
Structural Relationships ◽  
Network Flexibility ◽  
Li Ion

Iron vanadates and phosphates have been widely explored [1-2] as possible electrode material for Li-ion batteries. In the goal of finding new materials, our approach was to consider existing materials and to investigate the flexibility of their network for possible substitutions. Among the different materials containing iron and vanadium, Cu3Fe4(XO4)6 (X = P, V) are isostructural to Fe7(PO4)6. Lafontaine et al. [3] discussed the structural relationships between β-Cu3Fe4(VO4)6 and several other vanadates, phosphates and molybdates of general formula AxBy(VO4)6. The interesting network flexibility was then demonstrated with the existence of four different crystallographic sites, which can be partially occupied depending on the x+y value : x+y = 7 for β-Cu3Fe4(VO4)6) and x+y = 8 for NaCuFe2(VO4)3. The LixFey(VO4)6 phase was then prepared considering the substitution of Li+ and Fe3+ for Cu2+ ions in β-Cu3Fe4(VO4)6 and the existence of an extra site to accommodate the charge compensation (7 ≤ x+y ≤ 8). As expected, a new lithium iron vanadate, isotructural to mineral Howardevansite was then obtained. Single crystal diffraction data were collected at room temperature on Enraf-Nonius CAD-4 diffractometer. Structure was refined with JANA-2006 program package. Mössbauer and magnetic measurements were also used to check the oxidation state of iron ions, to support the obtained crystal structure and to consider any possible structural/magnetic transitions. All the results will be presented and discussed in this presentation.

One Shot Laser Pulse Induced Reversible Spin Transition in the Spin-Crossover Complex [Fe(C4H4N2){Pt(CN)4}] at Room Temperature

2005 ◽  
Vol 117 (26) ◽  
pp. 4137-4141 ◽  
Author(s):  
Sébastien Bonhommeau ◽  
Gábor Molnár ◽  
Ana Galet ◽  
Antoine Zwick ◽  
José-Antonio Real ◽  
...  
Keyword(s):  
Laser Pulse ◽  
Room Temperature ◽  
Spin Crossover ◽  
Spin Transition

Hysteretic spin crossover driven by anion conformational change

2017 ◽  
Vol 53 (70) ◽  
pp. 9801-9804 ◽  
Author(s):  
Natnaree Phukkaphan ◽  
Dyanne L. Cruickshank ◽  
Keith S. Murray ◽  
Wasinee Phonsri ◽  
Phimphaka Harding ◽  
...  
Keyword(s):  
Conformational Change ◽  
Room Temperature ◽  
Spin Crossover ◽  
Wide Hysteresis

An air stable FeIII complex showing a wide hysteresis near room temperature is described. The origin of the cooperativity is an unprecedented anion conformational change.

Matrix-free synthesis of spin crossover micro-rods showing a large hysteresis loop centered at room temperature

2015 ◽  
Vol 51 (45) ◽  
pp. 9346-9349 ◽  
Author(s):  
Haonan Peng ◽  
Gábor Molnár ◽  
Lionel Salmon ◽  
Azzedine Bousseksou
Keyword(s):  
Hysteresis Loop ◽  
Room Temperature ◽  
Spin Crossover ◽  
The Novel ◽  
Large Hysteresis ◽  
Crossover Behavior ◽  
Matrix Free

Acicular micro-rods of the novel [Fe(Htrz)3](CF3SO3)2 complex exhibiting large hysteretic spin crossover behavior perfectly centered at room temperature.

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