Synthesis, Crystal Structure and Magnetic Properties of 4,4′- Bipyridine Bridged Dinuclear Iron(III) Complex containingN,N′-Ethylene-Bis(salicylideneiminato)

2007 ◽  
Vol 633 (11-12) ◽  
pp. 2085-2088 ◽  
Author(s):  
Xun Feng ◽  
Jian-Ge Wang ◽  
Cheng-Zhi Xie ◽  
Ning Ma
Keyword(s):  
Crystal Structure ◽  
Magnetic Properties ◽  
Dinuclear Iron

Synthesis, Crystal Structure, and Spectroscopic and Magnetic Properties of a Dinuclear Iron(III) Complex Asymmetrically Bridged by a Phenoxo and a Methoxo Group

2005 ◽  
Vol 60 (9) ◽  
pp. 940-944 ◽  
Author(s):  
C. T. Zeyrek ◽  
A. Elmali ◽  
Y. Elerman
Keyword(s):  
Crystal Structure ◽  
Magnetic Properties ◽  
Magnetic Susceptibility ◽  
Structural Parameters ◽  
Hamiltonian Operator ◽  
Antiferromagnetic Coupling ◽  
Iron Ions ◽  
Spin Hamiltonian ◽  
Dinuclear Iron ◽  
Super Exchange Interaction

A new dinuclear iron(III) derivative Fe2L(OCH3)Cl2 (L = 1,3-bis[N-(5-chloro-2-hydroxybenzylidene)- 2-aminoethyl]-2-(5-chloro-2-hydroxyphenyl)imidazolidine) has been synthesized, it crystal structure determined and magnetically characterized. The two iron(III) ions are asymmetrically bridged by a phenoxo and a methoxo group and separated by 3.150(2)Å . The magnetic susceptibility of the complex was measured over the range 5 - 349.3 K and the observed data were successfully simulated by the equation based on the spin-Hamiltonian operator , indicating very weak antiferromagnetic coupling between the iron ions with J = −11.3 cm−1. The magnetic and structural parameters of the compound and the nature of the magnetic super-exchange interaction are discussed and compared with data of similar dinuclear iron(III) complexes.

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.

Magnetic Properties and Crystal Structure of a Dinuclear Iron(III) Complex

2001 ◽  
Vol 56 (9) ◽  
pp. 897-900 ◽  
Author(s):  
A. Elmali ◽  
Y. Elerman ◽  
I. Svoboda
Keyword(s):  
Crystal Structure ◽  
Magnetic Properties ◽  
Magnetic Susceptibility ◽  
Liquid Helium ◽  
Magnetic Moment ◽  
Helium Temperature ◽  
Temperature Dependent ◽  
Triclinic Space Group ◽  
Dinuclear Iron ◽  
Binuclear Unit

Abstract [FeL(MeOH)Cl]2 (L = N-(5-methylphenyl)-3-methoxysalicylaldimine) was synthesized and its crystal structure determined, [C30H26Cl2Fe2N2O6], triclinic, space group P1̄, a = 7.481(2), b = 9.436(2), c = 10.961(2) Å, α= 69.790(10), β= 82.440(10), γ= 83.690(10)°, V=718.1(3) Å3 , Z = 1. Two identical [FeLCl] fragments, related by an inversion centre, 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 = -10.4(1) cm-1), which follows from temperature-dependent magnetic susceptibility measurements in the range 5.1 to 275.6 K. The magnetic moment at 275.6 K is ca. 7.02 B. M., but 0.99 B. M. at 5.1 K. The magnetic susceptibility is at a maximum near 80 K and decreases rapidly as the temperature is lowered to liquid helium temperature.

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.

scholarly journals Synthesis, Crystal structure, and Magnetic Properties of Dinuclear Iron(III) Complexes with Methoxo Bridges

2010 ◽  
Vol 31 (12) ◽  
pp. 3617-3622 ◽  
Author(s):  
Jong-Won Shin ◽  
Jeong-Hyeong Han ◽  
Sankara Rao Rowthu ◽  
Bong-Gon Kim ◽  
Kil-Sik Min
Keyword(s):  
Crystal Structure ◽  
Magnetic Properties ◽  
Dinuclear Iron
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