High-spin polynitroxide radicals as versatile bridging ligands for transition metal complexes with high ferri/ferromagnetic Tc

1996 ◽  
Vol 68 (2) ◽  
pp. 243-252 ◽  
Author(s):  
H. Iwamura ◽  
Katsuya Inoue ◽  
T. Hayamizu
Keyword(s):  
Transition Metal ◽  
Metal Complexes ◽  
High Spin ◽  
Transition Metal Complexes ◽  
Bridging Ligands

scholarly journals Ferromagnetism in polynuclear systems based on non-linear [MnII2MnIII] building blocks

2016 ◽  
Vol 3 (10) ◽  
pp. 1272-1279 ◽  
Author(s):  
Jordi Cirera ◽  
Yuan Jiang ◽  
Lei Qin ◽  
Yan-Zhen Zheng ◽  
Guanghua Li ◽  
...  
Keyword(s):  
Transition Metal ◽  
Metal Complexes ◽  
High Spin ◽  
Transition Metal Complexes ◽  
Building Blocks ◽  
Bridging Ligands ◽  
Non Linear ◽  
Important Challenge ◽  
Ferromagnetic Interactions

Design of new polynuclear transition metal complexes showing ferromagnetic interactions to achieve high spin values is an important challenge due to the scarcity of bridging ligands that provide such coupling.

Übergangsmetallkomplexe mit Schwefelliganden, CI*. Synthese und Struktur von N2H5[Fe(N2H4)(S2C6H4)2] · 1,33N2H4 / Transition Metal Complexes with Sulfur Ligands, Cl*. Synthesis and Structure of N2H5[Fe(N2H4)(S2C6H4)2] · 1,33N2H4

1994 ◽  
Vol 49 (5) ◽  
pp. 660-664 ◽  
Author(s):  
Dieter Sellmann ◽  
Helge Friedrich ◽  
Falk Knoch
Keyword(s):  
Transition Metal ◽  
Metal Complexes ◽  
Structure Analysis ◽  
High Spin ◽  
Transition Metal Complexes ◽  
X Ray ◽  
Labile N

Attempts to coordinate N2H4 to [Fe(S2C6H4)2] fragments lead to N2H5[Fe(N2H4)(S2C6H4)2], which crystallizes from MeOH/N2H4 solutions as the solvate [(N2H5){Fe(N2H4)(S2C6H4)2} · 1,33 N2H4]. 1, and has been characterized by X-ray structure analysis. 1 contains three discrete N2H5+ cations, four N2H4 solvate molecules and three independent [Fe(N2H4)(S2C6H4)2]- anions which are connected via an extended network of N-H ··· N and N-H ··· S bridges. N2H5[Fe(N2H4)(S2ChH4)2] and 1 contain high-spin Fe(III) centers and labile N2H4 ligands.

scholarly journals Transition metal complexes with thiosemicarbazide-based ligands, part 47: Synthesis, physicochemical and voltammetric characterization of iron(III) complexes with pyridoxal semi-, thiosemi- and S-meth

2003 ◽  
Vol 68 (12) ◽  
pp. 929-942 ◽  
Author(s):  
Violeta Jevtovic ◽  
Ljiljana Jovanovic ◽  
Vukadin Leovac ◽  
Luka Bjelica
Keyword(s):  
Transition Metal ◽  
Metal Complexes ◽  
High Spin ◽  
Transition Metal Complexes ◽  
Elemental Analysis ◽  
Solution Equilibria ◽  
Electrode Processes ◽  
Voltammetric Study

The reaction of warm EtOH solutions of FeX3.nH2O (X=Cl, NO3) with tridentate ONX (X=O, S, N) pyridoxal semi-, thiosemi- and S-methylisothiosemicabazones (H2L1, H2L2, H2L3, respectively) yielded high-spin octahedral mono- and bis(ligand) complexes of the formula [Fe(H2L1-3)Cl2(H2O)]Cl,[Fe(HL1,2)2]Cl.nH2O and [Fe(H2L3)(HL3)]NO3)2.H2O. The compounds were characterized by elemental analysis, conductometric and magnetochemical measurements, IR and UV-Vis spectra. Besides, a detailed voltammetric study of the complexes was carried out in DMF solution in the presence of several supporting electrolytes, to characterize the nature of the electrode processes and solution equilibria.

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