High-Spin Polymers: Ferromagnetic Coupling of S = 1 Hexaazacyclophane Units up to a Pure S = 2 Polycyclophane

2017 ◽  
Vol 121 (16) ◽  
pp. 4293-4298 ◽  
Author(s):  
Lukasz Skorka ◽  
Piotr Kurzep ◽  
Timothée Chauviré ◽  
Lionel Dubois ◽  
Jean-Marie Mouesca ◽  
...  
Keyword(s):  
High Spin ◽  
Ferromagnetic Coupling

ChemInform Abstract: Evaluation of Potential Ferromagnetic Coupling Units: The Bis(TMM) Approach to High-Spin Organic Molecules.

ChemInform ◽  
2010 ◽  
Vol 24 (27) ◽  
pp. no-no
Author(s):  
S. J. JACOBS ◽  
D. A. SHULTZ ◽  
R. JAIN ◽  
J. NOVAK ◽  
D. A. DOUGHERTY
Keyword(s):  
High Spin ◽  
Organic Molecules ◽  
Ferromagnetic Coupling

Evaluation of potential ferromagnetic coupling units: the bis(TMM) [bis(trimethylenemethane)] approach to high-spin organic molecules

1993 ◽  
Vol 115 (5) ◽  
pp. 1744-1753 ◽  
Author(s):  
S. Joshua Jacobs ◽  
David A. Shultz ◽  
Rakesh Jain ◽  
Julie Novak ◽  
Dennis A. Dougherty
Keyword(s):  
High Spin ◽  
Organic Molecules ◽  
Ferromagnetic Coupling

Approaches from High-Spin Organic Molecules to Organic Ferromagnets

1992 ◽  
Vol 247 ◽  
Author(s):  
Takayuki Ishida ◽  
Katsuya Inoue ◽  
Noboru Koga ◽  
Nobuo Nakamura ◽  
Hiizu Iwamura
Keyword(s):  
High Spin ◽  
Ground State ◽  
Organic Molecules ◽  
Light Guide ◽  
Ferromagnetic Coupling ◽  
Two Dimensional ◽  
Successful Result ◽  
Organic Ferromagnets

ABSTRACTPseudo-two dimensional branched polycarbenes 1, 3, 5-[H(m-C6H4C:)n/3]3C6H3 (2)(n = 6, 9) were prepared. The measurement of their magnetization on a Faraday balance equipped with a light guide has revealed that 2(n = 6) has a tridecet ground state (S = 6.0). The m-phenylene skeleton as a dependable ferromagnetic coupling unit has also been applied with success to the synthesis of persistent systems, i.e., 5, by replacing each carbene center in linear polycarbenes 1 with a nitroxide. A necessary degree of steric protection of the radical centers was disclosed. Extension to real polymers 4 gave an only partly successful result.

Ferromagnetic Coupling between Low- and High-Spin Iron(III) Ions in the Tetranuclear Complexfac-{[FeIII{HB(pz)3}(CN)2(μ-CN)]3FeIII(H2O)3}· 6H2O ([HB(pz)3]-= Hydrotris(1-pyrazolyl)borate)

2002 ◽  
Vol 41 (23) ◽  
pp. 5943-5945 ◽  
Author(s):  
Rodrigue Lescouëzec ◽  
Jacqueline Vaissermann ◽  
Francesc Lloret ◽  
Miguel Julve ◽  
Michel Verdaguer
Keyword(s):  
High Spin ◽  
Ferromagnetic Coupling ◽  
High Spin Iron

scholarly journals Towards Design of High Spin Metal-free Materials

2014 ◽  
Vol 23 (4) ◽  
pp. 321
Author(s):  
Nguyen Van Thanh ◽  
Nguyen Anh Tuan
Keyword(s):  
High Spin ◽  
Density Functional ◽  
Spin Exchange ◽  
Good Choice ◽  
Halogenated Hydrocarbons ◽  
Ferromagnetic Coupling ◽  
Functional Theory ◽  
Face To Face ◽  
Carbon Based

In this paper, in order to explore high-spin carbon-based magnetic materials with strong ferromagnetic coupling, geometric structure, electronic structure and magnetic properties of alternating stacks of \(\pi \)-radical-halogenated-hydrocarbons and diamagnetic molecules have been investigated based on density-functional theory with dispersion correction. These alternating stacks are predicted to avoid the typical antiferromagnetic spin-exchange of indentical face-to-face radicals via spin polarization of a diamagnetic molecule in between. Our results show that \(\pi\)-radical-halogenated-hydrocarbons like perchlorophenalenyl (C\(_{13}\)Cl\(_{9})\) is strong ferromagnetic coupling if alternatingly stacked with aromatics like fluorinated coronene (C\(_{24}\)F\(_{12})\) or coronene (C\(_{24}\)H\(_{12})\), while fluorinated perinaphthenyl (C\(_{13}\)F\(_{9})\) and perinaphthenyl (C\(_{13}\)H\(_{9})\) are not an equally good choice. The role of ligand configuration in determining exchange coupling in stacks is discussed. These results would give some hints for designing new high-spin carbon-based ferromagnetic materials.

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