Crystal structure and magnetic properties of two dinuclear iron(III) complexes with multidentate Schiff-base ligands

2011 ◽  
Vol 64 (20) ◽  
pp. 3531-3540 ◽  
Author(s):  
Lei Yan ◽  
Shuai Ding ◽  
Yufei Ji ◽  
Zhiliang Liu ◽  
Caiming Liu
Keyword(s):  
Crystal Structure ◽  
Magnetic Properties ◽  
Schiff Base ◽  
Schiff Base Ligands ◽  
Dinuclear Iron

Facile synthesis of Cu(II) complexes of monocondensed N,N,N donor Schiff base ligands: Crystal structure, spectroscopic and magnetic properties

Polyhedron ◽  
2006 ◽  
Vol 25 (11) ◽  
pp. 2241-2253 ◽  
Author(s):  
Shouvik Chattopadhyay ◽  
Mau Sinha Ray ◽  
Michael G.B. Drew ◽  
Albert Figuerola ◽  
Carmen Diaz ◽  
...  
Keyword(s):  
Crystal Structure ◽  
Magnetic Properties ◽  
Schiff Base ◽  
Facile Synthesis ◽  
Schiff Base Ligands

Exchange Interaction in a Dinuclear Iron(III) Complex of a Heptadentate Schiff Base: Synthesis, Crystal Structure and Magnetic Properties

2005 ◽  
Vol 60 (7) ◽  
pp. 727-731 ◽  
Author(s):  
C. T. Zeyrek ◽  
A. Elmali ◽  
Y. Elerman
Keyword(s):  
Crystal Structure ◽  
Magnetic Properties ◽  
Magnetic Susceptibility ◽  
Schiff Base ◽  
Exchange Interaction ◽  
Hamiltonian Operator ◽  
Antiferromagnetic Coupling ◽  
Iron Ions ◽  
Spin Hamiltonian ◽  
Dinuclear Iron

Synthesis, crystallographic characterization and magnetic properties of the new dinuclear iron(III) complex Fe2L(OCH3)Cl2 (L=1,3-bis[N-(3,5-dichloro-2-hydroxybenzylidene)-2-aminoethyl]-2-(3,5- dichlo ro-2-hydroxyphenyl)imidazolidine) are reported. The structure consists of dinuclear units. The two iron(III) atoms are asymmetrically bridged by a phenoxo and a methoxo group. The iron(III) centers are separated by 3.133(2) Å . The Magnetic susceptibility of the complex was measured over the range 5 - 298 K and the observed data were successfully simulated by the equation based on the spin-Hamiltonian operator H = −JS⃗1.S⃗2. Magnetic susceptibility measurements indicate very weak antiferromagnetic coupling between the iron ions with J = −10.8 cm−1 and g = 2.0.

Crystal Structure and Magnetic Properties of a New Hetero-Dinuclear CuIIMnII Schiff Base Complex

2003 ◽  
Vol 58 (4) ◽  
pp. 271-277 ◽  
Author(s):  
Y. Elerman ◽  
A. Elmali ◽  
C. T. Zeyrek ◽  
I. Svoboda ◽  
H. Fuess
Keyword(s):  
Crystal Structure ◽  
Magnetic Properties ◽  
Schiff Base ◽  
Schiff Base Complex ◽  
Antiferromagnetic Interaction ◽  
Monoclinic Space Group ◽  
Distorted Tetrahedron ◽  
Molar Magnetic Susceptibility ◽  
Schiff Base Ligands ◽  
Oxygen Atoms

Mn[Cu(L)(O2CMe)2] · H2O (L = N,N’-bis(2-hydroxy-3-methoxybenzylidene)-1,3-diaminopropane) was synthesized and the crystal structure determined. (C23H26CuMnN2O8).H2O, monoclinic, space group P21/c, a = 12.017(3), b = 8.217(3), c = 24.786(4) Å , β = 92.10(2)°, V = 2446(1) Å3, Z = 4. The crystal structure consists of ordered dinuclear units with CuII and MnII ions bridged by two oxygen atoms of the Schiff base ligand. The CuII coordination sphere is a slightly distorted square-plane formed by the N2O2 donor set of the Schiff base ligands. The average Cu-O and Cu-N distances are 1.920(1) and 1.957(4) Å , respectively. The coordination around the MnII ion is a distorted tetrahedron with the donor oxygen atoms of the Schiff base ligands and oxygen atoms of the acetate anions. The Cu ··· Mn separation is 3.327(4) Å . There is also one non-coordinating water molecule in the crystal structure. The χ and χT versus T plots, χ being the molar magnetic susceptibility per CuIIMnII unit and T the temperature, has been measured in the 4.9 - 301 K temperature range. The values of the interaction parameters are J = −28.3 cm−1, gMn = 2.01, gCu = 2.07. This indicates an intramolecular antiferromagnetic interaction between CuII and MnII ions.

Crystal Structure and Magnetic Properties of a Dinuclear Iron(III) Doubly Oxygen Bridged Schiff Base Complex

2003 ◽  
Vol 58 (5) ◽  
pp. 433-437 ◽  
Author(s):  
A. Elmali ◽  
Y. Elerman ◽  
C. T. Zeyrek ◽  
I. Svoboda
Keyword(s):  
Crystal Structure ◽  
Magnetic Properties ◽  
Magnetic Susceptibility ◽  
Schiff Base ◽  
Schiff Base Complex ◽  
Inversion Center ◽  
Temperature Dependent ◽  
Triclinic Space Group ◽  
Dinuclear Iron ◽  
Binuclear Unit

[Fe(L)Cl]2 (L = N-(4-methylphenyl)-3-methoxy-salicylaldimimine) was synthesized and its crystal structure determined. [C30H26Cl2Fe2N2O6], triclinic, space group P 1̄ , a = 9.278(2), b = 9.4050(10), c = 10.489(2) Å , α = 64.43(2), β = 74.540(10), γ = 62.40(2)° , V = 729.1(2) Å 3, Z = 1. Two identical [Fe(L)Cl] fragments, related by an inversion center, are connected by two bridging O atoms to form a binuclear unit. The iron(III) centers are separated by 3.196(2) Å and weakly antiferromagnetically coupled (J = -10.1(1) cm-1), as derived from temperature-dependent magnetic susceptibility measurements in the range 5.1-283.5 K.

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