Room temperature hysteretic spin crossover in a new cyanoheterometallic framework

2019 ◽  
Vol 55 (23) ◽  
pp. 3359-3362 ◽  
Author(s):  
Volodymyr M. Hiiuk ◽  
Sergiu Shova ◽  
Aurelian Rotaru ◽  
Vadim Ksenofontov ◽  
Igor O. Fritsky ◽  
...  
Keyword(s):  
Room Temperature ◽  
Spin Crossover ◽  
Thermal Hysteresis ◽  
Ambient Conditions

A new iron(ii)-based spin-crossover compound with thermal hysteresis operating under ambient conditions is reported.

Bistable Spin-Crossover Nanoparticles Showing Magnetic Thermal Hysteresis near Room Temperature

2007 ◽  
Vol 19 (10) ◽  
pp. 1359-1361 ◽  
Author(s):  
E. Coronado ◽  
J. R. Galán-Mascarós ◽  
M. Monrabal-Capilla ◽  
J. García-Martínez ◽  
P. Pardo-Ibáñez
Keyword(s):  
Room Temperature ◽  
Spin Crossover ◽  
Thermal Hysteresis

scholarly journals Five 2,6-Di(pyrazol-1-yl)pyridine-4-carboxylate Esters, and the Spin States of their Iron(II) Complexes

2019 ◽  
Vol 5 (1) ◽  
pp. 9 ◽  
Author(s):  
Iurii Galadzhun ◽  
Rafal Kulmaczewski ◽  
and Malcolm A. Halcrow
Keyword(s):  
Room Temperature ◽  
Spin Crossover ◽  
Thermal Hysteresis ◽  
Spin Transition ◽  
Benzyl Ester ◽  
The Other ◽  
Spin States ◽  
Phenyl Ester ◽  
Coupling Reagent ◽  
Complex Salts

Two phenyl ester and three benzyl ester derivatives have been synthesized from 2,6-di(pyrazol-1-yl)pyridine-4-carboxylic acid and the appropriate phenyl or benzyl alcohol using N,N’-dicyclohexylcarbodiimide as the coupling reagent. Complexation of the ligands with Fe[BF4]2·6H2O in acetone yielded the corresponding [FeL2][BF4]2 complex salts. Four of the new ligands and four of the complexes have been crystallographically characterised. Particularly noteworthy are two polymorphs of [Fe(L3)2][BF4]2·2MeNO2 (L3 = 3,4-dimethoxyphenyl 2,6-di{pyrazol-1-yl}pyridine-4-carboxylate), one of which is crystallographically characterised as high-spin while the other exhibits the onset of spin-crossover above room temperature. The other complexes are similarly low-spin at low temperature but exhibit gradual spin-crossover on heating, except for an acetone solvate of [Fe(L5)2][BF4]2 (L5 = benzyl 2,6-di{pyrazol-1-yl}pyridine-4-carboxylate), which exhibits a more abrupt spin-transition at T½ = 273 K with 9 K thermal hysteresis.

Room temperature bistability with wide thermal hysteresis in a spin crossover silica nanocomposite

2013 ◽  
Vol 1 (10) ◽  
pp. 1933 ◽  
Author(s):  
Pierrick Durand ◽  
Sébastien Pillet ◽  
El-Eulmi Bendeif ◽  
Cédric Carteret ◽  
Mohamed Bouazaoui ◽  
...  
Keyword(s):  
Room Temperature ◽  
Spin Crossover ◽  
Thermal Hysteresis ◽  
Silica Nanocomposite

Tuning size and magnetic thermal hysteresis in a new near room temperature spin crossover compound

2013 ◽  
Vol 42 (23) ◽  
pp. 8205 ◽  
Author(s):  
Li Zhang ◽  
Juan-Juan Wang ◽  
Guan-Cheng Xu ◽  
Jing Li ◽  
Dian-Zeng Jia ◽  
...  
Keyword(s):  
Room Temperature ◽  
Spin Crossover ◽  
Thermal Hysteresis

Room temperature study of the optical switching of a spin crossover compound inside its thermal hysteresis loop

2010 ◽  
Vol 96 (4) ◽  
pp. 041907 ◽  
Author(s):  
G. Gallé ◽  
D. Deldicque ◽  
J. Degert ◽  
Th. Forestier ◽  
J.-F. Létard ◽  
...  
Keyword(s):  
Hysteresis Loop ◽  
Optical Switching ◽  
Room Temperature ◽  
Spin Crossover ◽  
Thermal Hysteresis ◽  
Temperature Study ◽  
Thermal Hysteresis Loop

scholarly journals Spin-crossover iron(ii) complex showing thermal hysteresis around room temperature with symmetry breaking and an unusually high T(LIESST) of 120 K

2019 ◽  
Vol 55 (81) ◽  
pp. 12227-12230 ◽  
Author(s):  
Víctor García-López ◽  
Mario Palacios-Corella ◽  
Salvador Cardona-Serra ◽  
Miguel Clemente-León ◽  
Eugenio Coronado
Keyword(s):  
Carboxylic Acid ◽  
Symmetry Breaking ◽  
Room Temperature ◽  
Spin Crossover ◽  
Thermal Hysteresis ◽  
Liesst Effect

The Fe(ii) complex of 4′,4′′ carboxylic acid disubstituted dipyrazolylpyridine shows spin-crossover around room temperature and the LIESST effect with T(LIESST) of 120 K.

Iron(III) Spin-Crossover Compounds with a Wide Apparent Thermal Hysteresis around Room Temperature

2001 ◽  
Vol 123 (47) ◽  
pp. 11644-11650 ◽  
Author(s):  
Shinya Hayami ◽  
Zhong-ze Gu ◽  
Hajime Yoshiki ◽  
Akira Fujishima ◽  
Osamu Sato
Keyword(s):  
Room Temperature ◽  
Spin Crossover ◽  
Thermal Hysteresis

Spin-crossover in an iron(iii) complex showing a broad thermal hysteresis

2021 ◽  
Author(s):  
Cyril Rajnák ◽  
Romana Mičová ◽  
Ján Moncoľ ◽  
Ľubor Dlháň ◽  
Christoph Krüger ◽  
...  
Keyword(s):  
Schiff Base ◽  
Schiff Base Ligand ◽  
Spin Crossover ◽  
Thermal Hysteresis ◽  
Mononuclear Complex ◽  
Hysteresis Width ◽  
Thermally Induced

A pentadentate Schiff-base ligand 3,5Cl-L2− and NCSe− form a iron(iii) mononuclear complex [Fe(3,5Cl-L)(NCSe)], which shows a thermally induced spin crossover with a broad hysteresis width of 24 K between 123 K (warming) and 99 K (cooling).

Visible-light-initiated Catalyst-free Oxidative Cleavage of Triaryl-Substituted Alkenes C=C Bonds under Ambient Conditions

2021 ◽  
Author(s):  
Wenjing Li ◽  
Shun Li ◽  
Lihua Luo ◽  
Yichen Ge ◽  
Jiaqi Xu ◽  
...  
Keyword(s):  
Visible Light ◽  
Room Temperature ◽  
Ambient Air ◽  
Oxidative Cleavage ◽  
Ambient Conditions ◽  
Blue Led ◽  
Catalyst Free

The catalyst-free oxidative cleavage of (Z)-triaryl-substituted alkenes bearing pyridyl motif with ambient air under irradiation of blue LED at room temperature has been developed. The reaction was facile and scalable,...

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,...

Sign in / Sign up

Export Citation Format

Share Document