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Bernard, Benjamin R.; Haines, Robert I.; Rowley, James E.

doi:10.1023/a:1007102819824

Cited by 8 publications

(2 citation statements)

References 19 publications

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“…Syntheses. The precursors [NiL 1 ](ClO 4 ) 2 , [NiL 2 ](ClO 4 ) 2 , [NiL 3 ](ClO 4 ) 2 , [NiL 4 ](ClO 4 ) 2 , [NiL 5 ](ClO 4 ) 2 , [NiL 6 ](ClO 4 ) 2 , and K[Fe(bpb)(CN) 2 ] were prepared according to literature methods. Caution!…”

Section: Methodsmentioning

confidence: 99%

[Fe(bpb)(CN)₂]^-as a Versatile Building Block for the Design of Novel Low-Dimensional Heterobimetallic Systems: Synthesis, Crystal Structures, and Magnetic Properties of Cyano-Bridged Fe^III−Ni^IIComplexes [(bpb)²^-= 1,2-Bis(pyridine-2-carboxamido)benzenate]

Kou

Zhao

et al. 2005

Inorg. Chem.

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A dicyano-containing [Fe(bpb)(CN)2]- building block has been employed for the synthesis of cyano-bridged heterometallic Ni(II)-Fe(III) complexes. The presence of steric bpb(2-) ligand around the iron ion results in the formation of low-dimensional species: five are neutral NiFe2 trimers and three are one-dimensional (1D). The structure of the 1D complexes consists of alternating [NiL]2+ and [Fe(bpb)(CN)2]- generating a cyano-bridged cationic polymeric chain and the perchlorate as the counteranion. In all complexes, the coordination geometry of the nickel ions is approximately octahedral with the cyano nitrogen atoms at the trans positions. Magnetic studies of seven complexes show the presence of ferromagnetic interaction between the metal ions through the cyano bridges. Variable temperature magnetic susceptibility investigations of the trimeric complexes yield the following J(NiFe) values (based on the spin exchange Hamiltonian H = -2J(NiFe) S(Ni) (S(Fe(1)) + S(Fe(2))): J(NiFe) = 6.40(5), 7.8(1), 8.9(2), and 6.03(4) cm(-1), respectively. The study of the magneto-structural correlation reveals that the cyanide-bridging bond angle is related to the strength of magnetic exchange coupling: the larger the Ni-N[triple bond]C bond angle, the stronger the Ni- - -Fe magnetic interaction. One 1D complex exhibits long-range antiferromagnetic ordering with T(N) = 3.5 K. Below T(N) (1.82 K), a metamagnetic behavior was observed with the critical field of approximately 6 kOe. The present research shows that the [Fe(bpb)(CN)2]- building block is a good candidate for the construction of low-dimensional magnetic materials.

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Section: Methodsmentioning

confidence: 99%

[Fe(bpb)(CN)₂]^-as a Versatile Building Block for the Design of Novel Low-Dimensional Heterobimetallic Systems: Synthesis, Crystal Structures, and Magnetic Properties of Cyano-Bridged Fe^III−Ni^IIComplexes [(bpb)²^-= 1,2-Bis(pyridine-2-carboxamido)benzenate]

Kou

Zhao

et al. 2005

Inorg. Chem.

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“…70 Of three new one-dimensional azide complexes, trans-[Ni(N-Eten) 2 (µ 1,3 -N 3 )] n -(ClO 4 ) n has a structural and magnetically alternating one-dimensional antiferromagnetic system with end-to-end azide bridges; trans-[Ni(N-Eten) 2 (µ 1,3 -N 3 )] n (PF 6 ) n has a magnetically uniform one-dimensional antiferromagnetic system with end-to-end azide bridges; and cis-[Ni(N-Eten)(µ 1,1 -N 3 ) 2 ] is a structural and magnetically alternating one-dimensional ferromagnetic system with double azide bridges end-on. 71 The kinetics of oxidation of [Ni(2,3,2-tet)] 2ϩ to [Ni(2,3,2-tet)] 3ϩ by persulfate have been investigated; 72 it is first order in each reactant. The crystal structure of [Ni(2,3,2-tet)](ClO 4 ) 2 shows it to contain slightly distorted square-planar nickel.…”

Section: N-donorsmentioning

confidence: 99%

14 Iron, cobalt and nickel

Cotton¹

2002

Annu. Rep. Prog. Chem., Sect. A: Inorg. Chem.

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Synthesis and spectroscopic investigation of new nickel(II) complexes with the open chain asymmetric tetraamine 1,4,7,11-tetraazaundecane: Crystal structure of the square-planar complex

Hatzipanayioti

Veneris

Parsons³

2007

Inorganica Chimica Acta

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Untitled

Cited by 8 publications

References 19 publications

[Fe(bpb)(CN)₂]^-as a Versatile Building Block for the Design of Novel Low-Dimensional Heterobimetallic Systems: Synthesis, Crystal Structures, and Magnetic Properties of Cyano-Bridged Fe^III−Ni^IIComplexes [(bpb)²^-= 1,2-Bis(pyridine-2-carboxamido)benzenate]

[Fe(bpb)(CN)₂]^-as a Versatile Building Block for the Design of Novel Low-Dimensional Heterobimetallic Systems: Synthesis, Crystal Structures, and Magnetic Properties of Cyano-Bridged Fe^III−Ni^IIComplexes [(bpb)²^-= 1,2-Bis(pyridine-2-carboxamido)benzenate]

14 Iron, cobalt and nickel

Synthesis and spectroscopic investigation of new nickel(II) complexes with the open chain asymmetric tetraamine 1,4,7,11-tetraazaundecane: Crystal structure of the square-planar complex

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Untitled

Cited by 8 publications

References 19 publications

[Fe(bpb)(CN)2]-as a Versatile Building Block for the Design of Novel Low-Dimensional Heterobimetallic Systems: Synthesis, Crystal Structures, and Magnetic Properties of Cyano-Bridged FeIII−NiIIComplexes [(bpb)2-= 1,2-Bis(pyridine-2-carboxamido)benzenate]

[Fe(bpb)(CN)2]-as a Versatile Building Block for the Design of Novel Low-Dimensional Heterobimetallic Systems: Synthesis, Crystal Structures, and Magnetic Properties of Cyano-Bridged FeIII−NiIIComplexes [(bpb)2-= 1,2-Bis(pyridine-2-carboxamido)benzenate]

14 Iron, cobalt and nickel

Synthesis and spectroscopic investigation of new nickel(II) complexes with the open chain asymmetric tetraamine 1,4,7,11-tetraazaundecane: Crystal structure of the square-planar complex

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[Fe(bpb)(CN)₂]^-as a Versatile Building Block for the Design of Novel Low-Dimensional Heterobimetallic Systems: Synthesis, Crystal Structures, and Magnetic Properties of Cyano-Bridged Fe^III−Ni^IIComplexes [(bpb)²^-= 1,2-Bis(pyridine-2-carboxamido)benzenate]

[Fe(bpb)(CN)₂]^-as a Versatile Building Block for the Design of Novel Low-Dimensional Heterobimetallic Systems: Synthesis, Crystal Structures, and Magnetic Properties of Cyano-Bridged Fe^III−Ni^IIComplexes [(bpb)²^-= 1,2-Bis(pyridine-2-carboxamido)benzenate]