Synthesis, Structural Characterization, and Magnetic Studies of Polynuclear Iron Complexes with a New Disubstituted Pyridine Ligand

2005 ◽  
Vol 44 (9) ◽  
pp. 3337-3346 ◽  
Author(s):  
Hayley A. Burkill ◽  
Neil Robertson ◽  
Ramón Vilar ◽  
Andrew J. P. White ◽  
David J. Williams
Keyword(s):  
Structural Characterization ◽  
Iron Complexes ◽  
Magnetic Studies ◽  
Pyridine Ligand ◽  
Polynuclear Iron Complexes

Polynuclear iron complexes impair the function of polymorphonuclear granulocytes

1988 ◽  
Vol 68 (3) ◽  
pp. 385-389 ◽  
Author(s):  
I. M. Hoepelman ◽  
E. Y. Jaarsma ◽  
J. Verhoef ◽  
J. J. M. Marx
Keyword(s):  
Iron Complexes ◽  
Polymorphonuclear Granulocytes ◽  
Polynuclear Iron Complexes

Polynuclear iron complexes: Three new structural types.

1993 ◽  
Vol 51 (1-2) ◽  
pp. 484
Author(s):  
K.L. Taft ◽  
G.C. Papaefthymiou ◽  
R. Sessoli ◽  
C.D. Delfs ◽  
D. Gatteschi ◽  
...  
Keyword(s):  
Iron Complexes ◽  
Structural Types ◽  
Polynuclear Iron Complexes

scholarly journals Spin Cross-Over (SCO) Complex Based on Unsymmetrical Functionalized Triazacyclononane Ligand: Structural Characterization and Magnetic Properties

2019 ◽  
Vol 5 (1) ◽  
pp. 19 ◽  
Author(s):  
Merzouk Halit ◽  
Mélissa Roger ◽  
Véronique Patinec ◽  
Said Yefsah ◽  
Carlos Gómez-García ◽  
...  
Keyword(s):  
Crystal Structure ◽  
Thermal Decomposition ◽  
Magnetic Properties ◽  
Nmr Spectroscopy ◽  
Functional Groups ◽  
Structural Characterization ◽  
Spin Crossover ◽  
Magnetic Studies ◽  
Dsc Measurements ◽  
Hexadentate Ligand

The unsymmetrical ligand 1-(2-aminophenyl)-4,7-bis(pyridin-2-ylmethyl)-1,4,7-triazacyclononane (L6) has been prepared and characterized by NMR spectroscopy. The L6 ligand is based on the triazamacrocycle (tacn) ring that is functionalized by two flexible 2-pyridylmethyl and one rigid 2-aminophenyl groups. Reaction of this ligand with Fe(ClO4)2·xH2O led to the complex [Fe(L6)](ClO4)2 (1), which was characterized as the first Fe(II) complex based on the unsymmetrical N-functionalized tacn ligand. The crystal structure revealed a discrete monomeric [FeL6]2+ entity in which the unsymmetrical N-functionalized triazacyclononane molecule (L6) acts as hexadentate ligand. As observed in the few parent examples that are based on the symmetrical N-functionalized tacn ligands, the triazacyclononane ring is facially coordinated and the N-donor atoms of the three functional groups (two pyridine and one aniline groups) are disposed in the same side of the tacn ring, leading to a distorted FeN6 environment. The magnetic studies of 1 revealed the presence of an incomplete spin crossover (SCO) transition above 425 K, whose progress would be prevented by a very exothermic thermal decomposition at ca. 472 K, as shown by thermogravimetric and DSC measurements.

Structural characterization of verdoheme analogs. Iron complexes of octaethyloxoporphyrin

1993 ◽  
Vol 115 (4) ◽  
pp. 1422-1429 ◽  
Author(s):  
Alan L. Balch ◽  
Lechoslaw Latos-Grazynski ◽  
Bruce C. Noll ◽  
Marilyn M. Olmstead ◽  
Ludmila Szterenberg ◽  
...  
Keyword(s):  
Structural Characterization ◽  
Iron Complexes
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