scholarly journals Drastic lattice softening in mixed triazole ligand iron(ii) spin crossover nanoparticles

2019 ◽  
Vol 55 (33) ◽  
pp. 4769-4772 ◽  
Author(s):  
Mario Piedrahita-Bello ◽  
Karl Ridier ◽  
Mirko Mikolasek ◽  
Gábor Molnár ◽  
William Nicolazzi ◽  
...  
Keyword(s):  
Spin Crossover ◽  
Mössbauer Study ◽  
Triazole Ligand ◽  
Lattice Softening

A Mössbauer study reveals the softening of the crystalline network in a series of mixed triazole ligand iron(ii) spin crossover nanoparticles.

scholarly journals Abrupt Spin Crossover Behavior in a Linear N1,N2-Triazole Bridged Trinuclear Fe(II) Complex

2018 ◽  
Vol 4 (3) ◽  
pp. 34
Author(s):  
Ai-Min Li ◽  
Tim Hochdörffer ◽  
Juliusz Wolny ◽  
Volker Schünemann ◽  
Eva Rentschler
Keyword(s):  
Spin Crossover ◽  
High Spin State ◽  
Single Step ◽  
Intramolecular Interactions ◽  
Monoclinic Space Group ◽  
X Ray Diffraction ◽  
X Ray ◽  
Nuclear Species ◽  
Crossover Behavior ◽  
Triazole Ligand

The synthesis, structures and magnetic properties of a new trinuclear spin crossover complex [FeII3(pyrtrz)6(TsO)6]·10H2O·2CH3OH (C2) and its analogue binuclear [FeII2(pyrtrz)5(SCN)4]·7H2O (C1), are reported here. These two compounds are synthesized based on the pyrrolyl functionalized Schiff base 1,2,4-triazole ligand 4-((1H-pyrrol-2-yl)methylene-amino)-4H-1,2,4-triazole (pyrtrz), which represent rare discrete multi-nuclear species, with µ2-N1,N2-triazole bridges linking the FeII centers. DC magnetic susceptibility measurements revealed an abrupt single-step spin crossover (SCO) behavior for compound 2 on the central FeII site and single-crystal X-ray diffraction (173 K) showed that this compound crystallizes in the monoclinic space group (P21/c), and multiple intramolecular interactions were found responsible for the abrupt transition. Compound 1 is a binuclear complex with thiocyanate as terminal ligands. This compound stays in high spin state over the whole temperature range and displays weak antiferromagnetic exchange coupling.

scholarly journals 1D iron(II)-1,2,4-triazolic chains with spin crossover assembled from discrete trinuclear complexes

2022 ◽  
Author(s):  
Sergii I Shylin ◽  
Sergiu Shova ◽  
Helena Jane Shepherd ◽  
Vadim Ksenofontov ◽  
Wolfgang Tremel ◽  
...  
Keyword(s):  
Spin Crossover ◽  
Disordered Structure ◽  
Trinuclear Complexes ◽  
Triazole Ligand

We report on a molecular cationic iron(II) complex with a 4-amino-1,2,4-triazole ligand and a tetraiodomercurate anion exhibiting an incomplete spin crossover (SCO). The complex exhibits an unusual disordered structure with...

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).

Dynamic and static muon-spin relaxation observed above and below the spin-crossover in Fe(II) complexes

2004 ◽  
Vol 114 ◽  
pp. 601-605 ◽  
Author(s):  
S. J. Blundell ◽  
T. Lancaster ◽  
F. L. Pratt ◽  
C. A. Steer ◽  
M. L. Brooks ◽  
...  
Keyword(s):  
Spin Relaxation ◽  
Spin Crossover ◽  
Muon Spin ◽  
Muon Spin Relaxation

MÖSSBAUER STUDY OF Fe57IN NiCr2O4

1996 ◽  
Vol 40 (C2) ◽  
pp. C2-247-C2-249
Author(s):  
M. Tanaka
Keyword(s):  
Mössbauer Study

A MÖSSBAUER STUDY ON POTTERY OF TURENG TEPE II

1974 ◽  
Vol 35 (C1) ◽  
pp. C1-105-C1-106
Author(s):  
K. P. SCHMIDT ◽  
M. VAN ROSSUM ◽  
T. MEYKENS ◽  
G. LANGOUCHE ◽  
R. COUSSEMENT ◽  
...  
Keyword(s):  
Mössbauer Study
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